Validation and Lemmatisation

New major functionality added:

• Validation of ATF files against ORACC server with error highlighting and display log with validation error messages.
• Lemmatise ATF files against ORACC server.

Other functionality added:

• Logging in Nammu's console (INFO level) as well as log file (DEBUG level).
• Undo/Redo, including undo lemmatisation.
• Copy/Cut/Paste from menu and toolbar.
• Show help/about in default internet browser.
• Line numbers display.
• Some documentation added about Nammu as well as ORACC server's SOAP web services.
• Enable use of configurable NAMMU_CONFIG_PATH containing log file and logging configuration file.

Fixes:

• Font didn't work properly in Windows, so it's now dependant on user's OS.
• PyORACC fixes to improve syntax highlighting.
• More cohesive toolbar icons and removed unused ones.
• Improvements on New/Open/Save/Close file functionality.
• UTF-8 text didn't show properly in text area.
• Correct handling of line endings in Windows.

Full list of changes in the development of this new version, see here.