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- Changed the way virtual packages are checked in apt to use ``apt-cache``
- https://github.com/ros-infrastructure/rosdep/pull/533
- Fixed a bug where the dependencies of metapackages were not being installed
- https://github.com/ros-infrastructure/rosdep/pull/531
- Improved error handling of failed downloads or invalid source files
- https://github.com/ros-infrastructure/rosdep/pull/523