Pyrtlsdr

What's Changed
* Support for MacOS by xoolive in https://github.com/pyrtlsdr/pyrtlsdr/pull/121
* Migrate CI to Github Actions by nocarryr in https://github.com/pyrtlsdr/pyrtlsdr/pull/124
* docs: fix simple typo, attatched -> attached by timgates42 in https://github.com/pyrtlsdr/pyrtlsdr/pull/125
* Fix typing errors by dforsi in https://github.com/pyrtlsdr/pyrtlsdr/pull/126
* Added Bias Tee Control by bradylangdale in https://github.com/pyrtlsdr/pyrtlsdr/pull/123

New Contributors
* xoolive made their first contribution in https://github.com/pyrtlsdr/pyrtlsdr/pull/121
* timgates42 made their first contribution in https://github.com/pyrtlsdr/pyrtlsdr/pull/125
* dforsi made their first contribution in https://github.com/pyrtlsdr/pyrtlsdr/pull/126
* bradylangdale made their first contribution in https://github.com/pyrtlsdr/pyrtlsdr/pull/123

**Full Changelog**: https://github.com/pyrtlsdr/pyrtlsdr/compare/v0.2.92...v0.2.93

- Numpy optimizations for TCP client - 109
- Move documentation to readthedocs.org - 113
- Update example script (test.py) with cmdline options - 116
- Show error information from libusb - 117

- Correct `__aiter__` method signature for Py3.7+ compatibility 91
- Add support for Python versions 3.6 and 3.7 in CI test builds 93

* 88 - Numpy optimizations