attempting fix for #97, eigen alignment problem on 32-bit arch.
Converted to a pointcloud pointer in Observation in more places.
some more corrections for the pointcloud object bug
Merge pull request #110 from mikegao88/bug-fix-mikegao88

Some more fixes for the pointcloud object bug and an improvement for the odometry_helper module
Changed new Odom-Helper::initialize() function to setOdomTopic().
amcl_pose and particle cloud are now published latched by amcl and fake_localization
Merge pull request #113 from piyushk/amcl_pose_latched

amcl_pose and particle cloud are now published latched