Prepping for 0.5.11 release.  #release-0.5.11

Documented support on Python 3.4.
Fixed printing tests for Python 3.4.
Tested on macports pythons 2.6, 2.7, 3.3, 3.4
Removed test_balloon_trunc2, not passing and not important.
Certified on python 2.7, openjpeg 1.3, 2.0, 2.1
Don't run test_jp2dump on 2.6.  Printing ordered dicts is very different on 2.6,
different enough not to bother testing.
Skipping two negative library tests that are now failing in 1.5.2.