Comments sidebar

Added a new sidebar that displays comments, allowing you to quickly move to different sections of the code.

Other interesting stuff:

• export (and selection of) disassembly text
• hex characters are also copied to the clipboard as text to paste into regular text documents
• data can be marked as an ANTIC display list and shown in the disassembly window
• Insert file command to place raw binary data at the cursor of the open file
• lots o bug fixes