added AREWindow plugin
added RemoteWindow plugin
added Delay plugin
added StringDelay plugin
added LineReader plugin
added documentation for new plugin
added demo model for new plugin features
applied usability patches to ACS
added new features to Keyboard actuator
added new features to MediaPlayer
applied patch to remove undesired GUI panel
catch exception for out-of-bounds painting
added new features for EventRouter plugin
added new features for EventFlipFlop plugin
added multiple input and output ports for EventRouter
added new features for StringDispatcher
added new features for TextSender
patch for Threshold to avoid unintended first event
added new features for ButtonGrid
added new features for Cellboard