Bosesoundtouchapi

* Added new method to `SoundTouchClient`: GetAudioSpeakerAttributeAndSetting - allows speaker attribute and settings to be retrieved (Rear, SubWoofer01, SubWoofer02).
* Added new method to `SoundTouchClient`: GetAudioProductLevelControls - allows speaker levels to be retrieved (FrontCenterSpeakerLevel, RearSurroundSpeakersLevel).
* Added new method to `SoundTouchClient`: SetAudioProductLevelControls - allows speaker levels to be adjusted (FrontCenterSpeakerLevel, RearSurroundSpeakersLevel).
* Added new method to `SoundTouchClient`: SetAudioDspControls - allows audio dsp controls to be adjusted (AudioMode, VideoSyncAudioDelay, SupportedAudioModes).
* Removed method from `SoundTouchClient`: SetAudioDspControlsAudioMode - replaced this with the more robust SetAudioDspControls method.
* Added class `SoundTouchHdmiCecModes` to define HDMI CEC Mode values.
* Added class `SoundTouchAudioModes` to define Audio Mode values.
* Updated documentation for various classes and sample code snippets.

* Added new method to `SoundTouchClient`: SetProductCecHdmiControl - allows HDMI CEC mode to be turned ON/OFF.
* Updated documentation for various classes and sample code snippets.

* Added new methods to `SoundTouchClient`: GetAudioProductToneControls, SetAudioProductToneControls.
* Updated `SoundTouchClient` methods GetAudioDspControls, GetBlueToothInfo, GetProductCecHdmiControl, GetProductHdmiAssignmentControls, GetRebroadcastLatencyMode, and SetAudioDspControlAudioMode to check device capabilities prior to executing the request. A `SoundTouchError` will be thrown if the device does not support the capability.

* Added several new methods to SoundTouchClient: GetAudioDspControls, GetBlueToothInfo, GetProductCecHdmiControl, GetProductHdmiAssignmentControls, GetRebroadcastLatencyMode, SetAudioDspControlAudioMode.

* Added several new methods to SoundTouchClient: SelectLastSoundTouchSource(), SelectLastSource(), SelectLocalSource().

* Accidentally changed the GetrSourceList() method to GetCapabilities() method while testing and pushed the change to PyPi.org. Changed it back, but hda to update the release to 1.0.9.