v0.4.0

Behavior Changes

• POSSIBLE BREAKING CHANGE - Byte Array Converters removed - SEE #392
• Firestorm indexing scheme removed
• Build tags added around references to persistent storage, making it slightly more possible to use in Google App Engine

Enhancements

• Match query supports changing default operator AND/OR
• Facet speedups
• UpsideDown indexing scheme query perf improvements
• Index API changes to make internal document identifiers opaque
• Ability to sort results by indexed fields
• Support read_only flag for boltdb indexes
• Improved unit test code coverage to 74%
• Removed nex query string lexer, replaced with custom lexer
• New query string lexer supports escaping reserved characters
• Minor text analysis perf tweaks

Bug Fixes

• Corrected Advance() method of regexp, prefix and fuzzy searchers #342
• Indexing of primitives fixed inside map/struct #389
• Moss handing of 0-length values
• Docs updated for date range querying #382