fixed bug with incorrectly tiled snapshots, ran test suite and found no regressions
Merge pull request #58 from aestrivex/master

mlab.savefig with positive magnification fix
ENH: Update changelog before 4.3.0 release.
REL: Updating version for 4.3.0 release.
use kwargs for wxpython 2.9 compat
also use kwargs in ex. handler
Merge pull request #62 from mluessi/wxpython_2.9

FIX: use kwargs for wxpython 2.9 compat