Audiofile

* Added: ``audiofile.write()`` can now create MP3 files
* Changed: ``audiofile`` does now use ``soundfile``
to read MP3 files
(2x speed increase),
and to access metadata of MP3 files
(up to 1000x speed increase)
* Changed: depend on ``soundfile>=0.12.1``
* Changed: updated benchmark pages in documentation
to latest versions of tested libraries
* Fixed: depend on ``audmath>=1.3.0``

* Added: support for Python 3.12

* Added: ``pedalboard`` to the benchmark section of the documentation
* Changed: use Python 3.10 when benchmarking different libraries
* Fixed: avoid deprecation warning by replacing ``pkg_resources`` internally with ``importlib.metadata``
* Removed: ``aubio`` from the benchmark section of the documentation

* Changed: evenly round ``offset``
and ``duration``
after converting to samples
in ``audiofile.read()``
and ``audiofile.convert_to_wav()``
for SND files
* Fix: ``offset``
and ``duration``
now behave the same
independent of the incoming file format

* Fixed: missing ``pytest`` requirement
in ``docs/requirements.txt``

* Added: support for Python 3.11
* Added: support for Python 3.10
* Changed: split API documentation into sub-pages
for each function
* Removed: dependency on ``pysox``