Merge pull request #253 from chapmandu/master

Updated change log
Merge pull request #22 from cfwheels/master

pull from upstream
repair missing json encoding
Merge pull request #255 from scahyono/master-json-encoding-fix

Master json encoding fix
Add geography & geometry datatype

Add geography & geometry datatype to MSSQL adapter. See issue https://github.com/cfwheels/cfwheels/issues/140
Updated change log.
Updated change log.
Removed old bug fix that's no longer needed (only applies to really old setups), see here:
http://www.raymondcamden.com/index.cfm/2005/10/8/IIS6-Bug-with-CFLOCATION

It has caused recent issues, see here:
https://groups.google.com/forum/#!topic/cfwheels/CH5vjD7OZ40
Work-around for FastHashRemoved struct bug in CF 8.
Updated change log.
Allow blank values to be passed through when validating uniqueness.
Updated change log.