-Tests
-Tutorials
-Implement in python as well
-Invert axis option in nodes (sink? source? both?)
-Dead-man button option in sink nodes
-Create new teleop sources
  -Onscreen joystick (GUI)
  -Android joystick (GUI)
-Dynamically enable/disable available teleop sources
  -Disable build of non-supported sources
    -Compile time detection of non-supported sources (e.g. detect missing header file)
    -Set pre-processor flag indicating source availability (for those who explicitly use sources)
  -Dynamic loading of available sources
    -Add separate wrapper ROS package with a wrapper class for each teleop source
      -Wrapper class handles everything related to class loading (pluginlib?)
    -Wrapper class supports generic get/set parameters using key/value pairs
      -Or add this natively to teleop source low-level interface?