New gazebo8 (8.2.0) and gazebo7 (7.9.0) releases

Hi all:

As part of the work of maintaining existing releases the Gazebo team has releases new versions of gazebo7and gazebo8:

The versions are available in the repository for Ubuntu Xenial and Ubuntu Zesty. For bugs or errors please use the gazebo issue tracker at bitbucket. For questions or doubts on how to use or programming with gazebo,