Remove python 3.2 from travis tests
Remove python 3.2 from travis tests

Travis is using an old version of python 3.2 that doesn't support the u
character in front of strings. It's not worth fixing for just that, and
python 3.3 gives enough coverage for python3.

tempbottle/pycapnp,rcrowder/pycapnp,SymbiFlow/pycapnp,SymbiFlow/pycapnp,jparyani/pycapnp,rcrowder/pycapnp,tempbottle/pycapnp,jparyani/pycapnp,tempbottle/pycapnp,rcrowder/pycapnp,SymbiFlow/pycapnp,jparyani/pycapnp,jparyani/pycapnp,rcrowder/pycapnp,tempbottle/pycapnp,SymbiFlow/pycapnp