#66 IPv6 support in asyncreactor.
 #66: Rudimentary IPv6 support for libevreactor.
#66: Rudimentary IPv6 support for geventreactor.
Test UDTs with different namedtuple variables
WIP unregistered nested udts
Test for PYTHON-98
implemented nested unregistered udts
Update README-dev
Update include, lib dirs for libevwrapper

Changes to allow extension to build against "brew install libev" on Mac.
Never reuse clusters within loadbalancingpolicytests
Merge pull request #170 from joaquincasares/hanging_jenkins_fix

Never reuse clusters within loadbalancingpolicytests
Update API docs, upgrade guide for 2.1
Fix harmless off-by-one error

This is harmless because with the v1/v2 protocol, the connection will
never issue new request IDs (like it does for v3).
Link to cqlengine in README
(De)serialize null values in tuples & udts correctly

Fixes PYTHON-110
Remove redundant prepares in tuple test
Add docstrings to new test methods
Merge pull request #171 from datastax/PYTHON-110

(De)serialize null values in tuples & udts correctly
Remove unintentional print
Merge pull request #168 from joaquincasares/PYTHON-98-test

Test for PYTHON-98