update coteditor's cask version 1.4.1 --> 1.5.2
Merge pull request #4355 from YusukeKomatsu/update_coteditor_1.5.2

update CotEditor to 1.5.2
Unity-web-player latest
Merge pull request #4356 from Ephemera/unity-web-player-latest

Unity-web-player latest