New features:

• _all field (#63)
• Index Aliases (#88)
• Boot-time Mapping Definitions (#86)
• Index FS Store: Allow to cache (in memory) specific files (#82)
• Mapper: Ability to disable storing the “source” field (#66)
• Mapping: Support for short type (#84)
• Search API:
  • Support highlighting (#69)
  • Scroll (#77)
• Shutdown API: allow to shutdown node(s) or the whole cluster (#64)
• Terms API: Support numbers/dates (#78)
• ThreadPool: Add a blocking thread pool (#74)

Enhancements:

• Support parsing Strings with numeric types (#54)
• Mapping – Support specifying string as number values (for example, for boost) (#53)
• Get API: Allow to specify which fields to load (#65)
• Index Analysis: Add language analyzers and stemmers (#72)
• Java API: Expose source as Map (in GetResponse, SearchHit), allow to index a Map (#58)
• Mapping: Allow to have for a field to not be stored and not indexed, but still be included in all (#90)
• Memory Store: change default bufferSize from 1k to 100k (#70)
• Query DSL: Rename filteredQuery to filtered (#85)
• ThreadPool: Rename dynamic to scaling (#75)

Bug fixes:

• A search with an empty fields param causes a NullPointerException or a runaway process (#55)
• Boolean field type does not handle number/string properly when searching (#59)
• Mapping metadata not restored from gateway on server restart (#57)
• indexName is lost after server restart (#62)
• NullPointerexception at org.elasticsearch.action.get.GetResponse.sourceAsString (#68)
• Another truthy falsy issue, this time in the allField (#76)
• tieBreakerMultiplier is broken (#73)
• Search with sort field of score fails (#83)
• Mapper : Schema less automatic date detection wrongly detects numbers as dates (#60)