- Fix [311](https://github.com/pyenv-win/pyenv-win/issues/311): Support many global and shell versions.
- Fix [318](https://github.com/pyenv-win/pyenv-win/issues/318): `pyenv global` and `pyenv local` no longer affect PYENV_VERSION, which only `pyenv shell` should affect.
- The test suite emulates a 32 bit architecture environment.
- The test suite now also runs tests using `powershell` and `pwsh` in addition to `cmd`.
- `pyenv shell` now works like `pyenv global` and `pyenv local` in that, on 32-bit platforms, it adds `-win32` to every supplied version if not explicitly added.