Beta release: switch console modes between Win32 and WSL and ensure bash.exe ignores Ctrl-C

This is a beta release for people wanting to test console mode switching. This should improve compat with Win32 console programs, although the result is not perfect with interactive programs (especially on Win10 1607, it might be slightly better on the last Insider builds). In this version, the console mode switching heuristic is clearly not good for background use (wcmd win32_console_prog &, or Ctrl-Z then bg)

Install as usual...

I recommend to stick with version 0.10 unless you want to specifically test this new behavior (including the behavior of Ctrl-C).