Added more alternative names for dlopen gobject, pango and pangocairo on Mac
Merge pull request #175 from commx/mac-altnames

Added more alternative names for dlopen (Mac)
Start testing in Python 3.4, stop in 3.1
Don’t use bold text to test ex units, it affects the x-height of Ahem.

Fixes a test that was broken for me.
Use ahem for test_overflow_wrap (fix #180)