- [x] Add [code coverage check](https://docs.gitlab.com/ee/user/project/merge_requests/test_coverage_visualization.html) to verify quality of unit tests
- [FXMisc/RichTextFX](https://github.com/FXMisc/RichTextFX) -> Library for handling rich text and line numbers
- [richtextfx-demos](https://github.com/FXMisc/RichTextFX/blob/master/richtextfx-demos/README.md) -> Examples and demos of how to use RichTextFX, including [Java Keywords Demo](https://github.com/FXMisc/RichTextFX/blob/master/richtextfx-demos/src/main/java/org/fxmisc/richtext/demo/JavaKeywordsAsyncDemo.java)
Example of how to generate and show a filetree recursively.
- [Youtube/ProgrammingKnowledge](https://www.youtube.com/watch?v=RY_Rb2UVQKQ) -> Introduction to the fundamentals
to create a filetree.
- [GenuineCoder](https://www.genuinecoder.com/save-files-javafx-filechooser/) -> Examples of how to use FileChooser
and setting extensionfilters. Also included a nice method to save files.
- [Tutorialspoint](https://www.tutorialspoint.com/how-to-save-files-using-a-file-chooser-in-javafx) -> Example
on how to use the openSaveDialog with FileChooser.
- [mkyoung](https://mkyong.com/java/how-to-create-directory-in-java/) -> Example on how to create a directory/folder.
- [Youtube/Cool IT Help](https://www.youtube.com/watch?v=gnXRI3pHxrU&t=727s) -> Showing how to cast (Stage). Example of how FXML, listener/event and DirectyChooser nicely can cooperate.
- [Code Makery](https://code.makery.ch/blog/javafx-dialogs-official/) -> Examples of many different javafx dialogs.