4.6.4
Release Notes
Library - Docs
- PR #491: add contribution guide for first-timers. Thanks to @daniloff200!
Library - Test
- PR #496: Add spotbugs and checkstyle maven plugins for Travis CI. Thanks to @rosariopfernandes!
Library - Chore
- PR #644: update GitHub branch references to use HEAD. Thanks to @thinkingserious!