Added frozen keyword to udt and tuple tests
Tests: Session auth tests using ccm updateconf
Add test for USE keyspace race bug CSHARP-175
Fix keyspace race bug CSHARP-175
Tests: Wrong keyspace name tests
Basic TimeUuid struct
TimeUuid: GetDate() method
TimeUuid serialization tests
TimeUuid parallel collisions test
Use TimeUuid in the TypeCodec CSHARP-166
Linq support for TimeUuid props.

- Add Linq mapping async test
Version bump
Merge branch '2.1'

Conflicts:
	src/Cassandra.IntegrationTests/Core/SessionAuthenticationTests.cs
	src/Cassandra/Connection.cs