wordCount versions

v2.5
v2.50 -> v2.56
- user notification updated, all deprecated code rewritten
- turn on notification alert added
- status menu bar icon changed
- dark mode supported
- new version release note added
- status menu bar icon not only matches macOS dark mode but also the wallpaper light/dark setting
- display control panel added to dock menu and main menu
- More by dragonBTV menu updated