Pixelblaze-client

Fixed

- Adjusted internal timeout in GetPatternList() to allow more time for slower
responding Pixelblazes.

Changed

- Changed ws_recv() to take an optional packetType parameter so that it can receive
arbitrary binary packets. This will allow callers to read data from things like
the Pixelblaze's new 1000 pixel preview frames. Fun! Thanks, pixie!

Added
- Documented getPixelCount/setPixelCount(), which lets you get and set the number of LEDs attached to your Pixelblaze.
- added the pause() and unpause() commands.

Changed

- Behavior changes around writes to flash, pattern caching, a few new commands...
- getPatternList() is now cached, for greatly improved performance. The cache timeout can be set by calling setCacheRefreshTime(seconds). The default is 600 seconds, or 10 minutes.
- Reduced unneccessary flash writes - setActivePattern(), setActivePatternId() and setBrightness() now take an optional saveFlash parameter, which is False by default, and uses the enable_flash_save() safety mechanism (described in the API documentation) to prevent inadvertent flash saves.

Fixed
- fixed endian-ness related bug in the enumerator, and changed Pixelblaze.waitforEmptyQueue() to actually do what
it says in the documentation. (It was throwing an exception on timeouts, rather than returning False
as described. Thanks to [Nick_W](https://github.com/NickWaterton) for finding the bug and suggesting a fix!)

Added
- Added support for Pixelblaze's updated internal pattern sequencer, starting the sequencer in either playlist or shuffle mode, and pausing and unpausing. See API docs for startSequencer(), pauseSequencer() and playSequencer below.

Added
- Added support for pypi. You can now install pixelblaze-client with pip. Once installed, simply `import pixelblaze` in your python programs!