Initial pass at integrating acceleration.
Fixing small bug with differential updating (introduced since last release)
Merge pull request #54 from ayrton04/master

Fixing small bug with differential updating (introduced since last relea...
Merge pull request #57 from ayrton04/indigo-devel

Fixing small bug with differential updating (introduced since last relea...
Fixing differential integration of absolute pose information
Merge branch 'groovy-devel'

Conflicts:
	include/robot_localization/ros_filter.h
Merge pull request #69 from ayrton04/master

Merging changes from ayrton04's repo
Merge pull request #8 from ayrton04/indigo-devel

Adding gps_transform_node
Merge pull request #73 from ayrton04/master

Adding gps_transform_node
Small tweak to prepareTwist
Merge branch 'master' of https://github.com/ayrton04/robot_localization
Merge pull request #76 from ayrton04/master

Small tweak to prepareTwist
Merge pull request #13 from ayrton04/indigo-devel

Renaming gps_transform_node to navsat_transform_node
Merge pull request #83 from ayrton04/master

Renaming gps_transform_node to navsat_transform_node
Updating changelog before release of x.1.5
Merge pull request #15 from cra-ros-pkg/master

Pulling in changelog and package.xml from upstream
Merging master branch into differential
Updating tests to match new state size
More test updates to match new state size
Some tweaks for better acceleration debugging and updating test 2