Add support for RGBA image values in WlzSobel() and WlzLaplacian() just using modulus values.
Free objects to allow for leak checks.
Fixed array bounds over run bug.
Make source code line length <= 80 chars.
Add new connected component threshold functions and binary.
Doxygen doc fix.
Fix null pointer error for 3D union requesting union with values but in which objects have no values.
Free object list to allow leak checking.
Now reentrant, no more static variables, but many changes made to layout to make it readable.
Now reentrant, no more static variables, OpenMP used but only for inital pass over planes.
Allow 2D to 2D copy.
Alloc NULL values when creating a tiled object.
New Woolz filter.
Fixed =/== bug.
New file with 3D convex hull code.
Added new filter WlzConvexHull.
Changes for OpenMP, now used named critical for WlzUnlink().
Added new error code: WLZ_ERR_DEGENERATE.
Added WLZ_SWAP() macro.
Added vertex sort functions.