A little maintenance

- fix skipping first app windows when alt+`-ing from alt+tab
- rename gui config members
- remove and update many comments
- slight code style update in path, print_all, set_key and wWinMain functions
- new functions close and minimize, synonyms for SendMessageW WM_CLOSE and
WM_SYSCOMMAND+SC_MINIMIZE
- rename rebuild -> restart
- refactor print_window to not call through to print_hwnd
- refactor autorun to take launch args as function parameters
- disable experimental hotkey for toggling app switching
- fix bug causing switcher to be oversized if alt+`-ing while showing gui
- separate alt+f4 & alt+q handling, and combine alt+w & alt+delete handling
- fix a warning in wWinMain