New Overwrite Methods
updateMap method
Fix for #68
Fix for inflation memory problems
InfIsValid #128
Static layer can recieve updates and accept non-lethal values
Map Server can serve maps with non-lethal values
Obstacle layer uses track_unknown_space parameter
Footprint layer is not longer created as top-level layer (used as part of obstacle layer instead)
Improved Global Planner (from Groovy branch)
Misc. other commits from Groovy Branch
Better handling of frame param in MapGridVisualizer
Cheat factor for end of DWA Plans
Merge pull request #146 from DLu/hydro

Updates from Groovy Branch
check whether costmap is initalized before publishing
don't set initialized until updateMap is called
uncommented trajectory_planner_ros from catkin_package LIBRARIES so other packages can find it
Correct type of prefer_forward penalty member variable

The setter and the configuration treat this value as a double, this
makes sense when comparing it to the other costs. However, it was stored
as a bool. This seems like a typo.
Ignore pyc files from running in devel
Keep consistent allignment_cost scale

Use the configured alignment cost instead of resetting to 1.0. This
condition (farther from goal than forward_point_distance) is probably
met at the start of navigation, it seems this cost should be obeyed
until the robot gets close, then ignored completely.
Merge pull request #153 from contradict/simple-bug-fixes

Simple bug fixes
Merge pull request #154 from contradict/consistent-alignment-cost-scale

Keep consistent allignment_cost scale
removing .py from executable script
install crop map
navfn: fix parallel build error from missing dep
Merge pull request #157 from ros-planning/navfn_cmake_dep

navfn: fix parallel build error from missing dep
global_planner: Fix bgp_plugin.xml file and install it
Merge pull request #161 from RainCT/hydro-devel

global_planner: Fix bgp_plugin.xml file and install it