duplicate pandu-rao's doc fixes in the readme
Fixed a bug when NetworkTopologyStrategy is used.

Although the Cassandra documentation implies that the
`replication_factor` parameter would be ignored in this case its
presence will cause an error when creating a keyspace using
NetworkTopologyStrategy.
better logging on operational errors
Merge branch 'master' of github.com:cqlengine/cqlengine
version bump
updated changelog
updating value manager to use deepcopy instead of copy
Transport Creation
Update documentation
updating version number and docs
updating timeout docs
Merge remote-tracking branch 'upstream/master'
Added guards to handle None value in Date and DateTime column to_python conversion
Added guard to handle None value in Date column to_database conversion
Add testcases for guards for None in date, datetime conversion
add BigInt column
Fixed bug in test case and expanded test case to include values_list
Allow use of timezone aware datetimes in {Max,Min}TimeUUID

Convert the given timezone aware datetimes to UTC in a similar manner
as the DateTime column type does instead of resulting in an error.
fixed authors
adding stubbed ttl query tests