Release v4.9.0

Changes in v4.9.0:

• Update to modification in hpp-corbaserver.
• Clean up: remove launch directory and config.rviz file.
• CMake Exports

v4.8.1

Release of version 4.8.1.

Release v4.8.0

Changes since v4.7.1:

• update CMake

Release v4.7.1

Changes since v4.7.0:

• move urdf to example-robot-data

This was required for https://github.com/nmansard/supaero2020

Release v4.7.0

Changes since v4.5.0:

• depend on example-robo-data for ur_description
• python 3 compatibility

Release v4.5.0

Changes since v4.2.1:

• [CMake] find xacro executable
• Make root joint type parameterizable.

Release v4.2.1

removed dependency to catkin