point_cloud/spherical_grid: rounding bug fixed
math-deg2rad, math-rad2deg: minor improvement (pull latest comma, if it does not build)
sensors/velodyne: stdin_reader moved to stream_reader and [trivially] generalized
Added python bindings for points-detect-change
Updates to snark point_cloud bindings
Removed debug code from py_partition
Changed output array to return value
Added license statements and example
Switched to boost python bindings
Added partitioning.
Reduced memory allocation for change detection
Changed resolution to accept x/y/z values
Added invert parameter to change detection

"Invert" allows you to find "definitely occluded" points. This is useful
for contraining point models when tracking. It returns points that are
within the shadow space of the reference scan, by reversing the range
logic normally used to detect points in the free space cones.