diff --git a/doc/doxygen.conf.in b/doc/doxygen.conf.in
index 440df06bf..420fb2122 100644
--- a/doc/doxygen.conf.in
+++ b/doc/doxygen.conf.in
@@ -1,4 +1,4 @@
-# Doxyfile 1.8.8
+# Doxyfile 1.8.11
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
@@ -46,10 +46,10 @@ PROJECT_NUMBER         = @VERSION@
 
 PROJECT_BRIEF          =
 
-# With the PROJECT_LOGO tag one can specify an logo or icon that is included in
-# the documentation. The maximum height of the logo should not exceed 55 pixels
-# and the maximum width should not exceed 200 pixels. Doxygen will copy the logo
-# to the output directory.
+# With the PROJECT_LOGO tag one can specify a logo or an icon that is included
+# in the documentation. The maximum height of the logo should not exceed 55
+# pixels and the maximum width should not exceed 200 pixels. Doxygen will copy
+# the logo to the output directory.
 
 PROJECT_LOGO           =
 
@@ -60,7 +60,7 @@ PROJECT_LOGO           =
 
 OUTPUT_DIRECTORY       = doc/api
 
-# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create 4096 sub-
+# If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
 # will distribute the generated files over these directories. Enabling this
 # option can be useful when feeding doxygen a huge amount of source files, where
@@ -93,14 +93,14 @@ ALLOW_UNICODE_NAMES    = NO
 
 OUTPUT_LANGUAGE        = English
 
-# If the BRIEF_MEMBER_DESC tag is set to YES doxygen will include brief member
+# If the BRIEF_MEMBER_DESC tag is set to YES, doxygen will include brief member
 # descriptions after the members that are listed in the file and class
 # documentation (similar to Javadoc). Set to NO to disable this.
 # The default value is: YES.
 
 BRIEF_MEMBER_DESC      = YES
 
-# If the REPEAT_BRIEF tag is set to YES doxygen will prepend the brief
+# If the REPEAT_BRIEF tag is set to YES, doxygen will prepend the brief
 # description of a member or function before the detailed description
 #
 # Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
@@ -135,7 +135,7 @@ ALWAYS_DETAILED_SEC    = NO
 
 INLINE_INHERITED_MEMB  = NO
 
-# If the FULL_PATH_NAMES tag is set to YES doxygen will prepend the full path
+# If the FULL_PATH_NAMES tag is set to YES, doxygen will prepend the full path
 # before files name in the file list and in the header files. If set to NO the
 # shortest path that makes the file name unique will be used
 # The default value is: YES.
@@ -205,9 +205,9 @@ MULTILINE_CPP_IS_BRIEF = NO
 
 INHERIT_DOCS           = YES
 
-# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce a
-# new page for each member. If set to NO, the documentation of a member will be
-# part of the file/class/namespace that contains it.
+# If the SEPARATE_MEMBER_PAGES tag is set to YES then doxygen will produce a new
+# page for each member. If set to NO, the documentation of a member will be part
+# of the file/class/namespace that contains it.
 # The default value is: NO.
 
 SEPARATE_MEMBER_PAGES  = NO
@@ -276,7 +276,7 @@ OPTIMIZE_OUTPUT_VHDL   = NO
 # instance to make doxygen treat .inc files as Fortran files (default is PHP),
 # and .f files as C (default is Fortran), use: inc=Fortran f=C.
 #
-# Note For files without extension you can use no_extension as a placeholder.
+# Note: For files without extension you can use no_extension as a placeholder.
 #
 # Note that for custom extensions you also need to set FILE_PATTERNS otherwise
 # the files are not read by doxygen.
@@ -295,8 +295,8 @@ MARKDOWN_SUPPORT       = YES
 
 # When enabled doxygen tries to link words that correspond to documented
 # classes, or namespaces to their corresponding documentation. Such a link can
-# be prevented in individual cases by by putting a % sign in front of the word
-# or globally by setting AUTOLINK_SUPPORT to NO.
+# be prevented in individual cases by putting a % sign in front of the word or
+# globally by setting AUTOLINK_SUPPORT to NO.
 # The default value is: YES.
 
 AUTOLINK_SUPPORT       = YES
@@ -336,13 +336,20 @@ SIP_SUPPORT            = NO
 IDL_PROPERTY_SUPPORT   = YES
 
 # If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
-# tag is set to YES, then doxygen will reuse the documentation of the first
+# tag is set to YES then doxygen will reuse the documentation of the first
 # member in the group (if any) for the other members of the group. By default
 # all members of a group must be documented explicitly.
 # The default value is: NO.
 
 DISTRIBUTE_GROUP_DOC   = NO
 
+# If one adds a struct or class to a group and this option is enabled, then also
+# any nested class or struct is added to the same group. By default this option
+# is disabled and one has to add nested compounds explicitly via \ingroup.
+# The default value is: NO.
+
+GROUP_NESTED_COMPOUNDS = NO
+
 # Set the SUBGROUPING tag to YES to allow class member groups of the same type
 # (for instance a group of public functions) to be put as a subgroup of that
 # type (e.g. under the Public Functions section). Set it to NO to prevent
@@ -401,7 +408,7 @@ LOOKUP_CACHE_SIZE      = 0
 # Build related configuration options
 #---------------------------------------------------------------------------
 
-# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# If the EXTRACT_ALL tag is set to YES, doxygen will assume all entities in
 # documentation are documented, even if no documentation was available. Private
 # class members and static file members will be hidden unless the
 # EXTRACT_PRIVATE respectively EXTRACT_STATIC tags are set to YES.
@@ -411,35 +418,35 @@ LOOKUP_CACHE_SIZE      = 0
 
 EXTRACT_ALL            = YES
 
-# If the EXTRACT_PRIVATE tag is set to YES all private members of a class will
+# If the EXTRACT_PRIVATE tag is set to YES, all private members of a class will
 # be included in the documentation.
 # The default value is: NO.
 
 EXTRACT_PRIVATE        = NO
 
-# If the EXTRACT_PACKAGE tag is set to YES all members with package or internal
+# If the EXTRACT_PACKAGE tag is set to YES, all members with package or internal
 # scope will be included in the documentation.
 # The default value is: NO.
 
 EXTRACT_PACKAGE        = NO
 
-# If the EXTRACT_STATIC tag is set to YES all static members of a file will be
+# If the EXTRACT_STATIC tag is set to YES, all static members of a file will be
 # included in the documentation.
 # The default value is: NO.
 
 EXTRACT_STATIC         = YES
 
-# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs) defined
-# locally in source files will be included in the documentation. If set to NO
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES, classes (and structs) defined
+# locally in source files will be included in the documentation. If set to NO,
 # only classes defined in header files are included. Does not have any effect
 # for Java sources.
 # The default value is: YES.
 
 EXTRACT_LOCAL_CLASSES  = YES
 
-# This flag is only useful for Objective-C code. When set to YES local methods,
+# This flag is only useful for Objective-C code. If set to YES, local methods,
 # which are defined in the implementation section but not in the interface are
-# included in the documentation. If set to NO only methods in the interface are
+# included in the documentation. If set to NO, only methods in the interface are
 # included.
 # The default value is: NO.
 
@@ -464,21 +471,21 @@ HIDE_UNDOC_MEMBERS     = NO
 
 # If the HIDE_UNDOC_CLASSES tag is set to YES, doxygen will hide all
 # undocumented classes that are normally visible in the class hierarchy. If set
-# to NO these classes will be included in the various overviews. This option has
-# no effect if EXTRACT_ALL is enabled.
+# to NO, these classes will be included in the various overviews. This option
+# has no effect if EXTRACT_ALL is enabled.
 # The default value is: NO.
 
 HIDE_UNDOC_CLASSES     = NO
 
 # If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
-# (class|struct|union) declarations. If set to NO these declarations will be
+# (class|struct|union) declarations. If set to NO, these declarations will be
 # included in the documentation.
 # The default value is: NO.
 
 HIDE_FRIEND_COMPOUNDS  = NO
 
 # If the HIDE_IN_BODY_DOCS tag is set to YES, doxygen will hide any
-# documentation blocks found inside the body of a function. If set to NO these
+# documentation blocks found inside the body of a function. If set to NO, these
 # blocks will be appended to the function's detailed documentation block.
 # The default value is: NO.
 
@@ -492,7 +499,7 @@ HIDE_IN_BODY_DOCS      = NO
 INTERNAL_DOCS          = NO
 
 # If the CASE_SENSE_NAMES tag is set to NO then doxygen will only generate file
-# names in lower-case letters. If set to YES upper-case letters are also
+# names in lower-case letters. If set to YES, upper-case letters are also
 # allowed. This is useful if you have classes or files whose names only differ
 # in case and if your file system supports case sensitive file names. Windows
 # and Mac users are advised to set this option to NO.
@@ -501,12 +508,19 @@ INTERNAL_DOCS          = NO
 CASE_SENSE_NAMES       = YES
 
 # If the HIDE_SCOPE_NAMES tag is set to NO then doxygen will show members with
-# their full class and namespace scopes in the documentation. If set to YES the
+# their full class and namespace scopes in the documentation. If set to YES, the
 # scope will be hidden.
 # The default value is: NO.
 
 HIDE_SCOPE_NAMES       = NO
 
+# If the HIDE_COMPOUND_REFERENCE tag is set to NO (default) then doxygen will
+# append additional text to a page's title, such as Class Reference. If set to
+# YES the compound reference will be hidden.
+# The default value is: NO.
+
+HIDE_COMPOUND_REFERENCE= NO
+
 # If the SHOW_INCLUDE_FILES tag is set to YES then doxygen will put a list of
 # the files that are included by a file in the documentation of that file.
 # The default value is: YES.
@@ -534,14 +548,14 @@ INLINE_INFO            = YES
 
 # If the SORT_MEMBER_DOCS tag is set to YES then doxygen will sort the
 # (detailed) documentation of file and class members alphabetically by member
-# name. If set to NO the members will appear in declaration order.
+# name. If set to NO, the members will appear in declaration order.
 # The default value is: YES.
 
 SORT_MEMBER_DOCS       = YES
 
 # If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the brief
 # descriptions of file, namespace and class members alphabetically by member
-# name. If set to NO the members will appear in declaration order. Note that
+# name. If set to NO, the members will appear in declaration order. Note that
 # this will also influence the order of the classes in the class list.
 # The default value is: NO.
 
@@ -586,27 +600,25 @@ SORT_BY_SCOPE_NAME     = NO
 
 STRICT_PROTO_MATCHING  = NO
 
-# The GENERATE_TODOLIST tag can be used to enable ( YES) or disable ( NO) the
-# todo list. This list is created by putting \todo commands in the
-# documentation.
+# The GENERATE_TODOLIST tag can be used to enable (YES) or disable (NO) the todo
+# list. This list is created by putting \todo commands in the documentation.
 # The default value is: YES.
 
 GENERATE_TODOLIST      = YES
 
-# The GENERATE_TESTLIST tag can be used to enable ( YES) or disable ( NO) the
-# test list. This list is created by putting \test commands in the
-# documentation.
+# The GENERATE_TESTLIST tag can be used to enable (YES) or disable (NO) the test
+# list. This list is created by putting \test commands in the documentation.
 # The default value is: YES.
 
 GENERATE_TESTLIST      = YES
 
-# The GENERATE_BUGLIST tag can be used to enable ( YES) or disable ( NO) the bug
+# The GENERATE_BUGLIST tag can be used to enable (YES) or disable (NO) the bug
 # list. This list is created by putting \bug commands in the documentation.
 # The default value is: YES.
 
 GENERATE_BUGLIST       = YES
 
-# The GENERATE_DEPRECATEDLIST tag can be used to enable ( YES) or disable ( NO)
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or disable (NO)
 # the deprecated list. This list is created by putting \deprecated commands in
 # the documentation.
 # The default value is: YES.
@@ -631,8 +643,8 @@ ENABLED_SECTIONS       =
 MAX_INITIALIZER_LINES  = 30
 
 # Set the SHOW_USED_FILES tag to NO to disable the list of files generated at
-# the bottom of the documentation of classes and structs. If set to YES the list
-# will mention the files that were used to generate the documentation.
+# the bottom of the documentation of classes and structs. If set to YES, the
+# list will mention the files that were used to generate the documentation.
 # The default value is: YES.
 
 SHOW_USED_FILES        = YES
@@ -696,7 +708,7 @@ CITE_BIB_FILES         =
 QUIET                  = YES
 
 # The WARNINGS tag can be used to turn on/off the warning messages that are
-# generated to standard error ( stderr) by doxygen. If WARNINGS is set to YES
+# generated to standard error (stderr) by doxygen. If WARNINGS is set to YES
 # this implies that the warnings are on.
 #
 # Tip: Turn warnings on while writing the documentation.
@@ -704,7 +716,7 @@ QUIET                  = YES
 
 WARNINGS               = YES
 
-# If the WARN_IF_UNDOCUMENTED tag is set to YES, then doxygen will generate
+# If the WARN_IF_UNDOCUMENTED tag is set to YES then doxygen will generate
 # warnings for undocumented members. If EXTRACT_ALL is set to YES then this flag
 # will automatically be disabled.
 # The default value is: YES.
@@ -721,12 +733,18 @@ WARN_IF_DOC_ERROR      = YES
 
 # This WARN_NO_PARAMDOC option can be enabled to get warnings for functions that
 # are documented, but have no documentation for their parameters or return
-# value. If set to NO doxygen will only warn about wrong or incomplete parameter
-# documentation, but not about the absence of documentation.
+# value. If set to NO, doxygen will only warn about wrong or incomplete
+# parameter documentation, but not about the absence of documentation.
 # The default value is: NO.
 
 WARN_NO_PARAMDOC       = NO
 
+# If the WARN_AS_ERROR tag is set to YES then doxygen will immediately stop when
+# a warning is encountered.
+# The default value is: NO.
+
+WARN_AS_ERROR          = NO
+
 # The WARN_FORMAT tag determines the format of the warning messages that doxygen
 # can produce. The string should contain the $file, $line, and $text tags, which
 # will be replaced by the file and line number from which the warning originated
@@ -750,7 +768,7 @@ WARN_LOGFILE           =
 # The INPUT tag is used to specify the files and/or directories that contain
 # documented source files. You may enter file names like myfile.cpp or
 # directories like /usr/src/myproject. Separate the files or directories with
-# spaces.
+# spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  = @abs_top_srcdir@/src/
@@ -766,12 +784,17 @@ INPUT_ENCODING         = UTF-8
 
 # If the value of the INPUT tag contains directories, you can use the
 # FILE_PATTERNS tag to specify one or more wildcard patterns (like *.cpp and
-# *.h) to filter out the source-files in the directories. If left blank the
-# following patterns are tested:*.c, *.cc, *.cxx, *.cpp, *.c++, *.java, *.ii,
-# *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h, *.hh, *.hxx, *.hpp,
-# *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc, *.m, *.markdown,
-# *.md, *.mm, *.dox, *.py, *.f90, *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf,
-# *.qsf, *.as and *.js.
+# *.h) to filter out the source-files in the directories.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# read by doxygen.
+#
+# If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
+# *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
+# *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
+# *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f, *.for, *.tcl,
+# *.vhd, *.vhdl, *.ucf, *.qsf, *.as and *.js.
 
 FILE_PATTERNS          = *.h \
                          *.hxx
@@ -858,6 +881,10 @@ IMAGE_PATH             =
 # Note that the filter must not add or remove lines; it is applied before the
 # code is scanned, but not when the output code is generated. If lines are added
 # or removed, the anchors will not be placed correctly.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
 
 INPUT_FILTER           =
 
@@ -867,11 +894,15 @@ INPUT_FILTER           =
 # (like *.cpp=my_cpp_filter). See INPUT_FILTER for further information on how
 # filters are used. If the FILTER_PATTERNS tag is empty or if none of the
 # patterns match the file name, INPUT_FILTER is applied.
+#
+# Note that for custom extensions or not directly supported extensions you also
+# need to set EXTENSION_MAPPING for the extension otherwise the files are not
+# properly processed by doxygen.
 
 FILTER_PATTERNS        =
 
 # If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
-# INPUT_FILTER ) will also be used to filter the input files that are used for
+# INPUT_FILTER) will also be used to filter the input files that are used for
 # producing the source files to browse (i.e. when SOURCE_BROWSER is set to YES).
 # The default value is: NO.
 
@@ -931,7 +962,7 @@ REFERENCED_BY_RELATION = NO
 REFERENCES_RELATION    = NO
 
 # If the REFERENCES_LINK_SOURCE tag is set to YES and SOURCE_BROWSER tag is set
-# to YES, then the hyperlinks from functions in REFERENCES_RELATION and
+# to YES then the hyperlinks from functions in REFERENCES_RELATION and
 # REFERENCED_BY_RELATION lists will link to the source code. Otherwise they will
 # link to the documentation.
 # The default value is: YES.
@@ -978,13 +1009,13 @@ USE_HTAGS              = NO
 
 VERBATIM_HEADERS       = YES
 
-# If the CLANG_ASSISTED_PARSING tag is set to YES, then doxygen will use the
+# If the CLANG_ASSISTED_PARSING tag is set to YES then doxygen will use the
 # clang parser (see: http://clang.llvm.org/) for more accurate parsing at the
 # cost of reduced performance. This can be particularly helpful with template
 # rich C++ code for which doxygen's built-in parser lacks the necessary type
 # information.
 # Note: The availability of this option depends on whether or not doxygen was
-# compiled with the --with-libclang option.
+# generated with the -Duse-libclang=ON option for CMake.
 # The default value is: NO.
 
 CLANG_ASSISTED_PARSING = NO
@@ -1027,7 +1058,7 @@ IGNORE_PREFIX          =
 # Configuration options related to the HTML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_HTML tag is set to YES doxygen will generate HTML output
+# If the GENERATE_HTML tag is set to YES, doxygen will generate HTML output
 # The default value is: YES.
 
 GENERATE_HTML          = YES
@@ -1093,10 +1124,10 @@ HTML_STYLESHEET        =
 # cascading style sheets that are included after the standard style sheets
 # created by doxygen. Using this option one can overrule certain style aspects.
 # This is preferred over using HTML_STYLESHEET since it does not replace the
-# standard style sheet and is therefor more robust against future updates.
+# standard style sheet and is therefore more robust against future updates.
 # Doxygen will copy the style sheet files to the output directory.
-# Note: The order of the extra stylesheet files is of importance (e.g. the last
-# stylesheet in the list overrules the setting of the previous ones in the
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
 # list). For an example see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
@@ -1113,7 +1144,7 @@ HTML_EXTRA_STYLESHEET  =
 HTML_EXTRA_FILES       =
 
 # The HTML_COLORSTYLE_HUE tag controls the color of the HTML output. Doxygen
-# will adjust the colors in the stylesheet and background images according to
+# will adjust the colors in the style sheet and background images according to
 # this color. Hue is specified as an angle on a colorwheel, see
 # http://en.wikipedia.org/wiki/Hue for more information. For instance the value
 # 0 represents red, 60 is yellow, 120 is green, 180 is cyan, 240 is blue, 300
@@ -1144,8 +1175,9 @@ HTML_COLORSTYLE_GAMMA  = 80
 
 # If the HTML_TIMESTAMP tag is set to YES then the footer of each generated HTML
 # page will contain the date and time when the page was generated. Setting this
-# to NO can help when comparing the output of multiple runs.
-# The default value is: YES.
+# to YES can help to show when doxygen was last run and thus if the
+# documentation is up to date.
+# The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
 HTML_TIMESTAMP         = YES
@@ -1241,28 +1273,28 @@ GENERATE_HTMLHELP      = NO
 CHM_FILE               =
 
 # The HHC_LOCATION tag can be used to specify the location (absolute path
-# including file name) of the HTML help compiler ( hhc.exe). If non-empty
+# including file name) of the HTML help compiler (hhc.exe). If non-empty,
 # doxygen will try to run the HTML help compiler on the generated index.hhp.
 # The file has to be specified with full path.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 HHC_LOCATION           =
 
-# The GENERATE_CHI flag controls if a separate .chi index file is generated (
-# YES) or that it should be included in the master .chm file ( NO).
+# The GENERATE_CHI flag controls if a separate .chi index file is generated
+# (YES) or that it should be included in the master .chm file (NO).
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 GENERATE_CHI           = NO
 
-# The CHM_INDEX_ENCODING is used to encode HtmlHelp index ( hhk), content ( hhc)
+# The CHM_INDEX_ENCODING is used to encode HtmlHelp index (hhk), content (hhc)
 # and project file content.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
 
 CHM_INDEX_ENCODING     =
 
-# The BINARY_TOC flag controls whether a binary table of contents is generated (
-# YES) or a normal table of contents ( NO) in the .chm file. Furthermore it
+# The BINARY_TOC flag controls whether a binary table of contents is generated
+# (YES) or a normal table of contents (NO) in the .chm file. Furthermore it
 # enables the Previous and Next buttons.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTMLHELP is set to YES.
@@ -1376,7 +1408,7 @@ DISABLE_INDEX          = NO
 # index structure (just like the one that is generated for HTML Help). For this
 # to work a browser that supports JavaScript, DHTML, CSS and frames is required
 # (i.e. any modern browser). Windows users are probably better off using the
-# HTML help feature. Via custom stylesheets (see HTML_EXTRA_STYLESHEET) one can
+# HTML help feature. Via custom style sheets (see HTML_EXTRA_STYLESHEET) one can
 # further fine-tune the look of the index. As an example, the default style
 # sheet generated by doxygen has an example that shows how to put an image at
 # the root of the tree instead of the PROJECT_NAME. Since the tree basically has
@@ -1404,7 +1436,7 @@ ENUM_VALUES_PER_LINE   = 4
 
 TREEVIEW_WIDTH         = 250
 
-# When the EXT_LINKS_IN_WINDOW option is set to YES doxygen will open links to
+# If the EXT_LINKS_IN_WINDOW option is set to YES, doxygen will open links to
 # external symbols imported via tag files in a separate window.
 # The default value is: NO.
 # This tag requires that the tag GENERATE_HTML is set to YES.
@@ -1433,7 +1465,7 @@ FORMULA_TRANSPARENT    = YES
 
 # Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
 # http://www.mathjax.org) which uses client side Javascript for the rendering
-# instead of using prerendered bitmaps. Use this if you do not have LaTeX
+# instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
 # installed or if you want to formulas look prettier in the HTML output. When
 # enabled you may also need to install MathJax separately and configure the path
 # to it using the MATHJAX_RELPATH option.
@@ -1519,7 +1551,7 @@ SERVER_BASED_SEARCH    = NO
 # external search engine pointed to by the SEARCHENGINE_URL option to obtain the
 # search results.
 #
-# Doxygen ships with an example indexer ( doxyindexer) and search engine
+# Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
 # Xapian (see: http://xapian.org/).
 #
@@ -1532,7 +1564,7 @@ EXTERNAL_SEARCH        = NO
 # The SEARCHENGINE_URL should point to a search engine hosted by a web server
 # which will return the search results when EXTERNAL_SEARCH is enabled.
 #
-# Doxygen ships with an example indexer ( doxyindexer) and search engine
+# Doxygen ships with an example indexer (doxyindexer) and search engine
 # (doxysearch.cgi) which are based on the open source search engine library
 # Xapian (see: http://xapian.org/). See the section "External Indexing and
 # Searching" for details.
@@ -1570,7 +1602,7 @@ EXTRA_SEARCH_MAPPINGS  =
 # Configuration options related to the LaTeX output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_LATEX tag is set to YES doxygen will generate LaTeX output.
+# If the GENERATE_LATEX tag is set to YES, doxygen will generate LaTeX output.
 # The default value is: YES.
 
 GENERATE_LATEX         = NO
@@ -1601,7 +1633,7 @@ LATEX_CMD_NAME         = latex
 
 MAKEINDEX_CMD_NAME     = makeindex
 
-# If the COMPACT_LATEX tag is set to YES doxygen generates more compact LaTeX
+# If the COMPACT_LATEX tag is set to YES, doxygen generates more compact LaTeX
 # documents. This may be useful for small projects and may help to save some
 # trees in general.
 # The default value is: NO.
@@ -1619,9 +1651,12 @@ COMPACT_LATEX          = NO
 PAPER_TYPE             = a4wide
 
 # The EXTRA_PACKAGES tag can be used to specify one or more LaTeX package names
-# that should be included in the LaTeX output. To get the times font for
-# instance you can specify
-# EXTRA_PACKAGES=times
+# that should be included in the LaTeX output. The package can be specified just
+# by its name or with the correct syntax as to be used with the LaTeX
+# \usepackage command. To get the times font for instance you can specify :
+# EXTRA_PACKAGES=times or EXTRA_PACKAGES={times}
+# To use the option intlimits with the amsmath package you can specify:
+# EXTRA_PACKAGES=[intlimits]{amsmath}
 # If left blank no extra packages will be included.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
@@ -1636,9 +1671,9 @@ EXTRA_PACKAGES         =
 # Note: Only use a user-defined header if you know what you are doing! The
 # following commands have a special meaning inside the header: $title,
 # $datetime, $date, $doxygenversion, $projectname, $projectnumber,
-# $projectbrief, $projectlogo. Doxygen will replace $title with the empy string,
-# for the replacement values of the other commands the user is refered to
-# HTML_HEADER.
+# $projectbrief, $projectlogo. Doxygen will replace $title with the empty
+# string, for the replacement values of the other commands the user is referred
+# to HTML_HEADER.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
 
 LATEX_HEADER           =
@@ -1654,6 +1689,17 @@ LATEX_HEADER           =
 
 LATEX_FOOTER           =
 
+# The LATEX_EXTRA_STYLESHEET tag can be used to specify additional user-defined
+# LaTeX style sheets that are included after the standard style sheets created
+# by doxygen. Using this option one can overrule certain style aspects. Doxygen
+# will copy the style sheet files to the output directory.
+# Note: The order of the extra style sheet files is of importance (e.g. the last
+# style sheet in the list overrules the setting of the previous ones in the
+# list).
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_EXTRA_STYLESHEET =
+
 # The LATEX_EXTRA_FILES tag can be used to specify one or more extra images or
 # other source files which should be copied to the LATEX_OUTPUT output
 # directory. Note that the files will be copied as-is; there are no commands or
@@ -1672,7 +1718,7 @@ LATEX_EXTRA_FILES      =
 PDF_HYPERLINKS         = YES
 
 # If the USE_PDFLATEX tag is set to YES, doxygen will use pdflatex to generate
-# the PDF file directly from the LaTeX files. Set this option to YES to get a
+# the PDF file directly from the LaTeX files. Set this option to YES, to get a
 # higher quality PDF documentation.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_LATEX is set to YES.
@@ -1713,11 +1759,19 @@ LATEX_SOURCE_CODE      = NO
 
 LATEX_BIB_STYLE        = plain
 
+# If the LATEX_TIMESTAMP tag is set to YES then the footer of each generated
+# page will contain the date and time when the page was generated. Setting this
+# to NO can help when comparing the output of multiple runs.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_LATEX is set to YES.
+
+LATEX_TIMESTAMP        = NO
+
 #---------------------------------------------------------------------------
 # Configuration options related to the RTF output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_RTF tag is set to YES doxygen will generate RTF output. The
+# If the GENERATE_RTF tag is set to YES, doxygen will generate RTF output. The
 # RTF output is optimized for Word 97 and may not look too pretty with other RTF
 # readers/editors.
 # The default value is: NO.
@@ -1732,7 +1786,7 @@ GENERATE_RTF           = NO
 
 RTF_OUTPUT             = rtf
 
-# If the COMPACT_RTF tag is set to YES doxygen generates more compact RTF
+# If the COMPACT_RTF tag is set to YES, doxygen generates more compact RTF
 # documents. This may be useful for small projects and may help to save some
 # trees in general.
 # The default value is: NO.
@@ -1769,11 +1823,21 @@ RTF_STYLESHEET_FILE    =
 
 RTF_EXTENSIONS_FILE    =
 
+# If the RTF_SOURCE_CODE tag is set to YES then doxygen will include source code
+# with syntax highlighting in the RTF output.
+#
+# Note that which sources are shown also depends on other settings such as
+# SOURCE_BROWSER.
+# The default value is: NO.
+# This tag requires that the tag GENERATE_RTF is set to YES.
+
+RTF_SOURCE_CODE        = NO
+
 #---------------------------------------------------------------------------
 # Configuration options related to the man page output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_MAN tag is set to YES doxygen will generate man pages for
+# If the GENERATE_MAN tag is set to YES, doxygen will generate man pages for
 # classes and files.
 # The default value is: NO.
 
@@ -1817,7 +1881,7 @@ MAN_LINKS              = NO
 # Configuration options related to the XML output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_XML tag is set to YES doxygen will generate an XML file that
+# If the GENERATE_XML tag is set to YES, doxygen will generate an XML file that
 # captures the structure of the code including all documentation.
 # The default value is: NO.
 
@@ -1831,7 +1895,7 @@ GENERATE_XML           = NO
 
 XML_OUTPUT             = xml
 
-# If the XML_PROGRAMLISTING tag is set to YES doxygen will dump the program
+# If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
 # listings (including syntax highlighting and cross-referencing information) to
 # the XML output. Note that enabling this will significantly increase the size
 # of the XML output.
@@ -1844,7 +1908,7 @@ XML_PROGRAMLISTING     = YES
 # Configuration options related to the DOCBOOK output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_DOCBOOK tag is set to YES doxygen will generate Docbook files
+# If the GENERATE_DOCBOOK tag is set to YES, doxygen will generate Docbook files
 # that can be used to generate PDF.
 # The default value is: NO.
 
@@ -1858,7 +1922,7 @@ GENERATE_DOCBOOK       = NO
 
 DOCBOOK_OUTPUT         = docbook
 
-# If the DOCBOOK_PROGRAMLISTING tag is set to YES doxygen will include the
+# If the DOCBOOK_PROGRAMLISTING tag is set to YES, doxygen will include the
 # program listings (including syntax highlighting and cross-referencing
 # information) to the DOCBOOK output. Note that enabling this will significantly
 # increase the size of the DOCBOOK output.
@@ -1871,10 +1935,10 @@ DOCBOOK_PROGRAMLISTING = NO
 # Configuration options for the AutoGen Definitions output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_AUTOGEN_DEF tag is set to YES doxygen will generate an AutoGen
-# Definitions (see http://autogen.sf.net) file that captures the structure of
-# the code including all documentation. Note that this feature is still
-# experimental and incomplete at the moment.
+# If the GENERATE_AUTOGEN_DEF tag is set to YES, doxygen will generate an
+# AutoGen Definitions (see http://autogen.sf.net) file that captures the
+# structure of the code including all documentation. Note that this feature is
+# still experimental and incomplete at the moment.
 # The default value is: NO.
 
 GENERATE_AUTOGEN_DEF   = NO
@@ -1883,7 +1947,7 @@ GENERATE_AUTOGEN_DEF   = NO
 # Configuration options related to the Perl module output
 #---------------------------------------------------------------------------
 
-# If the GENERATE_PERLMOD tag is set to YES doxygen will generate a Perl module
+# If the GENERATE_PERLMOD tag is set to YES, doxygen will generate a Perl module
 # file that captures the structure of the code including all documentation.
 #
 # Note that this feature is still experimental and incomplete at the moment.
@@ -1891,7 +1955,7 @@ GENERATE_AUTOGEN_DEF   = NO
 
 GENERATE_PERLMOD       = NO
 
-# If the PERLMOD_LATEX tag is set to YES doxygen will generate the necessary
+# If the PERLMOD_LATEX tag is set to YES, doxygen will generate the necessary
 # Makefile rules, Perl scripts and LaTeX code to be able to generate PDF and DVI
 # output from the Perl module output.
 # The default value is: NO.
@@ -1899,9 +1963,9 @@ GENERATE_PERLMOD       = NO
 
 PERLMOD_LATEX          = NO
 
-# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be nicely
+# If the PERLMOD_PRETTY tag is set to YES, the Perl module output will be nicely
 # formatted so it can be parsed by a human reader. This is useful if you want to
-# understand what is going on. On the other hand, if this tag is set to NO the
+# understand what is going on. On the other hand, if this tag is set to NO, the
 # size of the Perl module output will be much smaller and Perl will parse it
 # just the same.
 # The default value is: YES.
@@ -1921,14 +1985,14 @@ PERLMOD_MAKEVAR_PREFIX =
 # Configuration options related to the preprocessor
 #---------------------------------------------------------------------------
 
-# If the ENABLE_PREPROCESSING tag is set to YES doxygen will evaluate all
+# If the ENABLE_PREPROCESSING tag is set to YES, doxygen will evaluate all
 # C-preprocessor directives found in the sources and include files.
 # The default value is: YES.
 
 ENABLE_PREPROCESSING   = YES
 
-# If the MACRO_EXPANSION tag is set to YES doxygen will expand all macro names
-# in the source code. If set to NO only conditional compilation will be
+# If the MACRO_EXPANSION tag is set to YES, doxygen will expand all macro names
+# in the source code. If set to NO, only conditional compilation will be
 # performed. Macro expansion can be done in a controlled way by setting
 # EXPAND_ONLY_PREDEF to YES.
 # The default value is: NO.
@@ -1944,7 +2008,7 @@ MACRO_EXPANSION        = YES
 
 EXPAND_ONLY_PREDEF     = YES
 
-# If the SEARCH_INCLUDES tag is set to YES the includes files in the
+# If the SEARCH_INCLUDES tag is set to YES, the include files in the
 # INCLUDE_PATH will be searched if a #include is found.
 # The default value is: YES.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
@@ -2022,20 +2086,21 @@ TAGFILES               =
 
 GENERATE_TAGFILE       =
 
-# If the ALLEXTERNALS tag is set to YES all external class will be listed in the
-# class index. If set to NO only the inherited external classes will be listed.
+# If the ALLEXTERNALS tag is set to YES, all external class will be listed in
+# the class index. If set to NO, only the inherited external classes will be
+# listed.
 # The default value is: NO.
 
 ALLEXTERNALS           = NO
 
-# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed in
-# the modules index. If set to NO, only the current project's groups will be
+# If the EXTERNAL_GROUPS tag is set to YES, all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will be
 # listed.
 # The default value is: YES.
 
 EXTERNAL_GROUPS        = YES
 
-# If the EXTERNAL_PAGES tag is set to YES all external pages will be listed in
+# If the EXTERNAL_PAGES tag is set to YES, all external pages will be listed in
 # the related pages index. If set to NO, only the current project's pages will
 # be listed.
 # The default value is: YES.
@@ -2052,7 +2117,7 @@ PERL_PATH              = /usr/bin/perl
 # Configuration options related to the dot tool
 #---------------------------------------------------------------------------
 
-# If the CLASS_DIAGRAMS tag is set to YES doxygen will generate a class diagram
+# If the CLASS_DIAGRAMS tag is set to YES, doxygen will generate a class diagram
 # (in HTML and LaTeX) for classes with base or super classes. Setting the tag to
 # NO turns the diagrams off. Note that this option also works with HAVE_DOT
 # disabled, but it is recommended to install and use dot, since it yields more
@@ -2077,7 +2142,7 @@ MSCGEN_PATH            =
 
 DIA_PATH               =
 
-# If set to YES, the inheritance and collaboration graphs will hide inheritance
+# If set to YES the inheritance and collaboration graphs will hide inheritance
 # and usage relations if the target is undocumented or is not a class.
 # The default value is: YES.
 
@@ -2150,7 +2215,7 @@ COLLABORATION_GRAPH    = YES
 
 GROUP_GRAPHS           = YES
 
-# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# If the UML_LOOK tag is set to YES, doxygen will generate inheritance and
 # collaboration diagrams in a style similar to the OMG's Unified Modeling
 # Language.
 # The default value is: NO.
@@ -2202,7 +2267,8 @@ INCLUDED_BY_GRAPH      = YES
 #
 # Note that enabling this option will significantly increase the time of a run.
 # So in most cases it will be better to enable call graphs for selected
-# functions only using the \callgraph command.
+# functions only using the \callgraph command. Disabling a call graph can be
+# accomplished by means of the command \hidecallgraph.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
@@ -2213,7 +2279,8 @@ CALL_GRAPH             = NO
 #
 # Note that enabling this option will significantly increase the time of a run.
 # So in most cases it will be better to enable caller graphs for selected
-# functions only using the \callergraph command.
+# functions only using the \callergraph command. Disabling a caller graph can be
+# accomplished by means of the command \hidecallergraph.
 # The default value is: NO.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
@@ -2236,13 +2303,17 @@ GRAPHICAL_HIERARCHY    = YES
 DIRECTORY_GRAPH        = YES
 
 # The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
-# generated by dot.
+# generated by dot. For an explanation of the image formats see the section
+# output formats in the documentation of the dot tool (Graphviz (see:
+# http://www.graphviz.org/)).
 # Note: If you choose svg you need to set HTML_FILE_EXTENSION to xhtml in order
 # to make the SVG files visible in IE 9+ (other browsers do not have this
 # requirement).
 # Possible values are: png, png:cairo, png:cairo:cairo, png:cairo:gd, png:gd,
 # png:gd:gd, jpg, jpg:cairo, jpg:cairo:gd, jpg:gd, jpg:gd:gd, gif, gif:cairo,
-# gif:cairo:gd, gif:gd, gif:gd:gd and svg.
+# gif:cairo:gd, gif:gd, gif:gd:gd, svg, png:gd, png:gd:gd, png:cairo,
+# png:cairo:gd, png:cairo:cairo, png:cairo:gdiplus, png:gdiplus and
+# png:gdiplus:gdiplus.
 # The default value is: png.
 # This tag requires that the tag HAVE_DOT is set to YES.
 
@@ -2290,10 +2361,14 @@ DIAFILE_DIRS           =
 # PlantUML is not used or called during a preprocessing step. Doxygen will
 # generate a warning when it encounters a \startuml command in this case and
 # will not generate output for the diagram.
-# This tag requires that the tag HAVE_DOT is set to YES.
 
 PLANTUML_JAR_PATH      =
 
+# When using plantuml, the specified paths are searched for files specified by
+# the !include statement in a plantuml block.
+
+PLANTUML_INCLUDE_PATH  =
+
 # The DOT_GRAPH_MAX_NODES tag can be used to set the maximum number of nodes
 # that will be shown in the graph. If the number of nodes in a graph becomes
 # larger than this value, doxygen will truncate the graph, which is visualized
@@ -2330,7 +2405,7 @@ MAX_DOT_GRAPH_DEPTH    = 0
 
 DOT_TRANSPARENT        = YES
 
-# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# Set the DOT_MULTI_TARGETS tag to YES to allow dot to generate multiple output
 # files in one run (i.e. multiple -o and -T options on the command line). This
 # makes dot run faster, but since only newer versions of dot (>1.8.10) support
 # this, this feature is disabled by default.
@@ -2347,7 +2422,7 @@ DOT_MULTI_TARGETS      = NO
 
 GENERATE_LEGEND        = YES
 
-# If the DOT_CLEANUP tag is set to YES doxygen will remove the intermediate dot
+# If the DOT_CLEANUP tag is set to YES, doxygen will remove the intermediate dot
 # files that are used to generate the various graphs.
 # The default value is: YES.
 # This tag requires that the tag HAVE_DOT is set to YES.