Build: Updating the master version to 1.19.1-pre.
Build: Updating the master version to 1.19.1-pre.

RobJohnston/jquery-validation,jzaefferer/jquery-validation,staabm/jquery-validation,jquery-validation/jquery-validation,staabm/jquery-validation,RobJohnston/jquery-validation,jzaefferer/jquery-validation,jquery-validation/jquery-validation,jzaefferer/jquery-validation