2.0.0 RC1

• bugfix - cloning a unit did not also copy over the unit manager
• added support for multiple renderers. By default, VeePlay ships with two default renderers, MediaPlayerRenderer (used automatically for 4.0.x devices) and ExoPlayerRenderer(used automatically for 4.1+ devices)
• APSMediaUnit objects now hold a renderer string property. In order to explicitly set a renderer, use the static rendererIdentifier string of the renderer class.
• bugfix - transitioning to full screen and then changing orientation could cause an exception
• this version is a release candidate. Altough it was extensively tested over the past few weeks, it should be tested with each implementation before deploying into production