This is the Elasticsearch 5.0.0-rc1 compatible release.
Features
#2322 Mappings: Added support for half_float and scaled_float numeric datatypes
#2337 Updated datatype properties to align with ES 5.0 across the board
#2320 Added ability to supply local metadata to mapping properties TY @ejsmith
#2292 Allow implicit conversion from string[] to Types and Indices
Bug Fixes
#2209 Several improvements in some Query DSL edge cases
#2339 SniffingConnectionPool: Fixed response parsing of _nodes when sniffing cluster state
#2319 Fixed caching of field expressions that contained both variables and constants
#2310 ReindexOnServer: Correctly handle 400 responses
#2308 Fixed deserialization of responses that contain took, which was incorrectly typed to int. TY @maeserichar !
#2295 XML doc fix. TY @niemyjski !
#2242 #2269 Enhancements to serialization of DateTime
#2195 Query on PhraseSuggestCollate is now correctly typed to ITemplateQuery
Removal / deprecations
#2297 Removed deprecated MissingQuery
#2293 Removed deprecated IndexName