0.12.1: zip / issues

Release Notes:

Enhancements:

• Query DSL:
  • term, term, prefix, and range filter are now weakly cached, for more strong caching, set _cache to true. (#450)
  • constant_score and filtered queries cache filters by default, remove it (#449)
  • term filter to have _cache set to true by default (#453)
  • Revert back and have range, terms, and prefix filter _cache set to true (#456)
• Search: Change default operation threading to thread_per_shard from single_thread (#455)

Bug fixes:

• “geo_distance” parsing bugs (#454)
• Query: match_all query (also in query_string: :) is very slow (#451)
• Thrift: Response might get corrupted with extra data (#452)