Update project maskjs to v0.12.3
Update project mediaelement to 2.16.0
Update project jquery.waitforimages to 1.7
Merge pull request #2255 from jsdelivrbot/jquery.waitforimages/1.7

Update project jquery.waitforimages to 1.7
Merge pull request #2253 from jsdelivrbot/maskjs/v0.12.3

Update project maskjs to v0.12.3
Merge pull request #2254 from jsdelivrbot/mediaelement/2.16.0

Update project mediaelement to 2.16.0