1.8.3 (svn revision 146):
* fixed bug in Geod class that caused erroneous error message
"undefined inverse geodesic (may be an antipodal point)".
* fix __reduce__ method of Geod class so instances can be pickled.
* make sure points outside projection limb are set to 1.e30 on inverse
transform (if errcheck=False).
* fixed small setup.py bug.
* generate C source with Cython 0.9.6.6 (pycompat.h no longer needed).