Added check for good GPS fix to utm_transform_node
Merging changes from hydro-devel (issue #20)
Merging changes from differential branch
Fixing bug with update vector
Some changes to ease GPS integration
Changelog update before checkin
Moving master's package.xml to match Indigo's release number
Marked utm_transform_node for installation
Merge pull request #24 from muhrix/master

Marked utm_transform_node for installation
Link to the ROS wiki from README.
Merge pull request #26 from mikepurvis/patch-1

Link to the ROS wiki from README.
Added filter_base unit test
Updating test_filter_base and adding test_ekf
Changing the way initial measurements are handled so that they respect the update vector
Added handling for invalid quaternions for orientation data
Adding EKF test and updating the way masks are applied to messages with partial data
Changing initial estimate error covariance to be much smaller, and fixing some debug output
Updating EKF interface test
Updating EKF interface test
Merge pull request #28 from ayrton04/master

Small change for filter init and updating EKF interface test.