Fill states with colors proportional to pop density.
replaced with fillstates.py example
Replaced plotclimdiv.py with fillstates.py
replace climate divisions example with fill states example
New example shows how to fill state polygons.
*** empty log message ***
raise exception in readshapefile if vertices don't look like lat/lon pairs.
added plotmap_oo.py
New example.
reset subplot.params defaults so default axes rect has width and height of 0.9.
