initial commit working on 7523 against 2.1.1
Date serialization and deserialization work.  pre-epoch dates are off but that looks to be server-side.
working on serializing/deserializing new types
moving formatting into cqlshlib, remove reference to cql
use namedtuple instead of hard-coded type
add back in int64 pack for time that got lost in another commit
centralize time validation and serialization
Merge branch '7523' of https://github.com/josh-mckenzie/python-driver into 7523
Merge branch '7523' of https://github.com/josh-mckenzie/python-driver into 7523
working on integration tests