1. Documented on README.development how to setup the environment
for Windows.
2. Fixed qt/ts/package.json not working due usage of ; instead
of &&
3. Fixed copy-qt-files rsync using Windows paths instead of Unix
ones
4. Fixed Makefile's using Windows Linux Subsystem bash instead of
the Cygwin one.
5. Ensured running the correct pip module by using python -m pip
instead of just pip.
6. Fixed Makefiles using Windows `find` command, instead of the
Cygwin's one (POSIX find).
7. Fixed pyenv sourcing/activate using /pyevn/bin/ instead of
/python/Scripts/ on Windows.
8. Fixed pyaudio not installing/linking with portaudio on Windows
by installing for a patched fork at evandroforks/pyaudio
9. Forked and fixed portaudio not building with Visual Studio 2017
or superior and added the reference for the patched fork on
README.development at evandroforks/portaudio.
when using CARGO_TARGET_DIR to define a common build location on
macOS, maturin forces a rebuild every time as the link args
for the Python lib don't match those used when building the tests
