Merge branch 'release/0.3.8'
Merge branch 'release/0.3.9'
Merge pull request #8 from amluto/develop

Add Builder and Reader ABCs for each struct type
Change == on StructSchema to return cbool
Fix typo in read
Fix new typo...
Merge branch 'develop' of git://github.com/amluto/capnpc-python-cpp into amluto-develop

Conflicts:
	capnp/capnp.pyx
Fix problems from merge
Fix some docs
Add serialization round trip tests
Add packed roundtrip test
Fix to_bytes for python3
Update benchmarks
Mark dictionary serialization test as failing on pypy
Update docs for v0.3.0 release of C++ api
Bump version for v0.3.13
Merge branch 'release/0.3.13'
Merge branch 'release/0.3.13' into develop
Fix problem with to_dict
Bump version for v0.3.14