Cast-control

v0.9.4-release
This is the first release of `cast_control`. In addition to the new name, there are a few big changes:
- A new command-line interface with the `connect` and `service` commands
- Launch and manage `cast_control` as a background service with the `service` command
- `cast_control` and the shorter `castctl` commands replace `chromecast_mpris` on the command-line
- Target Python 3.7+ and drop support for 3.6

You can install this version like so:
bash

This is the final release under the name `chromecast_mpris`. The project's new name is Cast Control, and the PyPI package is `cast_control`.

Changes:
- Show deprecation warnings when launched
- Installing this package will install `cast_control` as long as Python 3.7+ is available

You can install this version like so:
bash
python3 -m pip install chromecast_mpris==0.8.12

This release has a few small changes:
- Fix support for default thumbnail images
- Reduce image file sizes. The wheel package on PyPI is now half of the size it was before.
- Back end refactoring

You can install this version like so:
bash
python3 -m pip install chromecast_mpris==0.8.3