-- New and Noteworthy (5.5.0) --
Upgrade to Checkstyle 5.5, adding Java 7 support.
-- Fixed Bugs (since 5.4.1) --
3417665 Checkstyle does not support "diamond" Java 7 syntax
-- Features (since 5.4.1) --
3434509 Upgrade to Checkstyle 5.5