added robinson and cyl tests
more fixes for warpimage and cylindrical projections.
fix warpimage/bluemarble methods for 'cyl','robin','moll' and 'sinu' projections.
fixed bug in PrintoutWX--thanks to Ziwen Fu
Import quad2cubic from mlab, not the nonexistent numerical_methods
Fix double rendering when saving PNGs with Agg backend.
minor typo
Separate drawstyles and linestyles for lines
more workarounds for geos library version 3
fixed numerical methods imports -> mlab
