Added documentation directory with a Makefile to generate source code

documentation. This adds python-epydoc as a build dependency.

doc/Makefile

@@ -0,0 +1,11 @@
+
+all: html
+
+html:
+	@echo ----------------
+	@echo Generating epydoc html code documentation.
+	@echo See epydoc-html.log for epydoc log.
+	@echo ----------------
+	epydoc --html -o html/ ../fluents ../workflows 2> epydoc-html.log
+
+

fluents/dataset.py

@@ -208,7 +208,7 @@ class CategoryDataset(Dataset):
 
     Always has linked dimension in first dim:
     ex matrix:
-             go_term1    go_term2  ...
+    .        go_term1    go_term2  ...
     gene_1
     gene_2
     gene_3