-- New and Noteworthy (5.4.0) --
Upgrade to Checkstyle 5.4.
-- Fixed Bugs (since 5.3.0) --
3392346 Checkstyle Plug-in disturbs refreshing files
3401499 Feature Request: Set ignoreModifier for AbstractClassName
-- Features (since 5.3.0) --
2855156 cancel not honoured (thanks to George Pucea for the patch)
3208535 ArrowDown key to move focus from filter to tree