fixes MP3 support and M1 binaries

No longer assumes *.MP3 files to have the *.MPEG file extension
M1 binaries should correctly support MP3 this time (thank you @faroit!)

improves macOS ARM platform tags

fixes setup.py for macOS

build system preparation for release 0.11.0

_soundfile_data now contains up-to-date binaries for Windows 32/64 and macOS intel/arm.
build scripts have been amended to use the new binaries

changelog is not yet updated
windows binaries use different C runtime than python, do not support file descriptors

fixes docs

new release with latest improvements

increment version number

increment version number

increment version number

Release 0.9.0