0.6.0 Release

[Russell Bradberry]

This release fixes quite a few issues in CQL and Thrift and is recommended that everyone upgrade to it.

• Fixed issue with composite column meta column marshalling [ @devdazed ]
• This addresses the issue that when using a composite comparator and specifying a schema, the columns don't marshal properly
• Exposed setColumnValidator to the user [ @devdazed #3 ]
• Added support for column counts to Thrift API [ @devdazed #26 ]
• Standard column count support, uses all the same options as a "get"
• Fixed boolean quoting issue in CQL2/3 [ @kzadorozhny #83 ]
• When using CQL with booleans, they needed to be quoted, see the issue for details.
• Added support for negative integers in CQL2/3 [ @pieterbos ]
  
• Includes support for negative integers with limited precision via CQL2/3. This will not add support for the Thrift negative integers as this needs to be added to the Helenus-Thrift library.