Fix timecode parsing in text files
Bump version
Add option to toggle milliseconds (fixes #246)
Rename Edit menu to Options
Add comments column (fixes #221, fixes #235)

* Read Comment from ASS files
* Read lines starting with # in srt and txt
* Show column in UI only if comments present
* Hide column when preferences are opened
Do not trigger apply() on checkbox state change
Do re/store hide desktop in settings
Disable hide desktop button if only one screen
Move hide desktop option outside config panel