Travis: Initiating build for commit '8b1545779918f7b5f1511821797cddf54ae5de06' on branch 'master': Fix bug in Date::addPeriod(N, 'month') where max number of days in a month was not respected. So if subtracting one month from July 31, result would be July 1. Now result is June 30th. Note: there appears to be little to no change in speed, tested both in integration tests and the code by itself.