Add date for version 2.5.0
- Java8 Date API support on date filter
- Replace guava cache with caffeine
-## v2.5.0 (2018-xx-xx)
+## v2.5.0 (2018-05-02)
- Handle all Iterables and Arrays in JoinFilter (#273)
- Fix NPE in GetAttributeExpression (#299)
- Remove redundant null check before calling operator "instanceof" in OperatorUtils. (#298)
