0.5.0

• First released (spin-off) version after restructuring the old remote_lab stack.
• Wviz now has a user interface for adding/removing displays into/from the scene.
• The stack depends on the new rosbridge (that is, rosbridge_suite), which has much better error handling and is maintained.
• rosjs_common now comes with the new rosjs (event based and provides a cleaner API compared to previous rosjs).