updated crate doc theme config
bugfix: old versions of `six` caused import errors
prepare release 0.9.3
bugfix: raise correct error if fetching infos is not 
possible because server is not fully started
prepare release 0.9.4
Fixed multi-engine issue.

The event listener for crate_before_execute should only modify the query if the event dialect is 'CrateDialect'.

Update 2014-05-13: Included compiler test using multiple engines.
Merge pull request #78 from jeffnappi/multi-engine-fix

Fixed multi-engine issue.
update CHANGES
fixed typo; fixed test
prepare release 0.9.5
fixed test_http
update crate server to 0.36.4 for testing
implemented any operator for crate 0.37.X