Bosesoundtouchapi

* Added `Information` and `SupportedURLs` objects to `SoundTouchClient`.`ConfigurationCache` upon class initialization. These are used by the `SoundTouchDevice` class.
* Added properties to `SoundTouchDevice` class - `UnknownUrlNames`, `UnSupportedUrlNames`.

* Added method `SoundTouchClient`.`GetInformation` - Gets the information configuration of the device.
* Added method `SoundTouchClient`.`GetIntrospectData` - Gets introspect data for a specified source.
* Added model `Component` - component configuration.
* Added model `Information` - info configuration.
* Added model `InformationNetworkInfo` - info network information configuration.
* Added model `Introspect` - introspect configuration.
* Added model `SupportedUrl` - supported url configuration.
* Added model `SupportedUrls` - supported urls configuration.
* Removed `SoundTouchDeviceComponent` class, as it was replaced by the `Component` model.
* Removed `InfoNetworkConfig` model, as it was replaced by the `InformationNetworkInfo` model.

* Updated method `SoundTouchWebSocket`.`_OnWebSocketClose` - Close event handler was missing 2 arguments that are passed for the event.

* Added method `SoundTouchDevice`.`RebootDevice` - Reboots the operating system of the SoundTouch device.
* Removed method `SoundTouchClient`.`Bookmark` - No longer necessary, as Pandora removed bookmark functionality; per Pandora, use thumbs up / down instead.
* Added method `SoundTouchClient`.`SetUserPlayControl` - Sends a user play control type command to stop / pause / play / resume media content playback.
* Added method `SoundTouchClient`.`SetUserRating` - Rates the currently playing media, if ratings are supported.
* Added method `SoundTouchClient`.`SetUserTrackControl` - Sends a user track control type command to control track playback (next, previous, repeat, shuffle, etc).
* Added model `UserPlayControl` - user play control configuration.
* Added model `UserPlayControlTypes` - user play control types enumeration.
* Added model `UserRating` - user rating configuration.
* Added model `UserRatingTypes` - user rating types enumeration.
* Added model `UserTrackControl` - user track control configuration.
* Added model `UserTrackControlTypes` - user track control types enumeration.

* Added method `SoundTouchClient`.`RemoveGroupStereoPair` - Removes an existing left / right stereo pair speaker group configuration from the device.
* Removed the `SoundTouchException` class, as it was not used; SoundTouchError class is used instead.
* cleaned up some unused references.

* Updated code to include pretty print of raw xml responses for easier debugging.