Pixelblaze-client

Added
- New **PixelblazeEnumerator** class that listens continuously for Pixelblaze beacon
packets, maintains a list of visible Pixelblazes and supports synchronizing time
on multiple Pixelblazes to allow them to run patterns simultaneously.

Added
- Added the ability to handle patterns with multiple color controls.
- added getColorControlNames() - returns a complete list of all rgb and hsv color controls associated with a pattern

Changed
- getColorControlName() now explicitly returns the name of the pattern's first color control. (It always did this, but now it's officially defined that way.)

Added
- controlExists(ctl_name, pattern) - returns True if specified control exists in the specified pattern, False otherwise
- getColorControlName() - returns name of rgb or hsv color picker if the pattern has one, None otherwise
- setColorControl(name,color) - allows you to set a color picker control to a 3 element array of color values
- variableExists(var_name) - returns True if specified variable is exported by the current pattern
- If you omit the pattern name argument from getControls() or controlExists(), control data is retrieved for the current pattern if available.

Initial release.