Static list instead of synchronized cache for collection-types
Switched to using EnumMap for SetType and ListType. Added fallback to 'Collection'Type.getInstance(...) for custom DateType.
Added tests to make sure a custom type is returned and not null (as was the case).

Removed javadoc and added license header for CodecTest.
Swapped usage of Pairs to map of maps
Merge pull request #140 from olvesh/codec-prewarm-cache

Static list instead of synchronized cache for collection-types
Changelog updates, few nits
Merge branch '1.0' into 2.0

Conflicts:
	driver-core/src/main/java/com/datastax/driver/core/Codec.java
Add CL.LOCAL_ONE and update depency to C* 1.2.12

JAVA-207 #fixes
Merge branch '1.0' into 2.0

Conflicts:
	driver-core/src/main/java/com/datastax/driver/core/ConsistencyLevel.java
	pom.xml
Changelog fix
Link upgrade guide in the readme

JAVA-183
[maven-release-plugin] prepare release 2.0.0-rc2
[maven-release-plugin] prepare for next development iteration
Update READMEs
Merge branch '2.0' of https://github.com/datastax/java-driver into 2.0