New version, some small improvements.
What's new:
- Mica is now optional. Thanks for @sumeshir26 for the idea. (I used the code comes from @TimothyMalahy in v.04, but had been removed in newer version, is know back!)
- Added keyboard binding.
Know issue:
- I'm aware of the Tkinter bug in high dpi display (125%, 150% scaling), which makes the font looks blurry. There is no way to fix that for now. Thankfully, the font looks crystal clear in 100% scaling which most of Windows laptop/PC use.