Authored by Jonas Budelmann

add changelog

  1 +v0.3.0
  2 +=======
  3 +
  4 +* added `- (NSArray *)mas_updateConstraints:(void(^)(MASConstraintMaker *))block` which will update existing constraints if possible, otherwise it will add them. This makes it easier to use Masonry within the UIView `- (void)updateConstraints` method which is the recommended place for adding constraints by apple.
  5 +* Updated examples for iOS7, added a few new examples.
  6 +* Added -isEqual: and -hash to MASViewAttribute @CraigSiemens.