Merge pull request #29 from TeeheeLP/dev

Version 1.2.7
Merge pull request #30 from TeeheeLP/dev

Hotfix
Update plugextra.js
Merge pull request #31 from TeeheeLP/dev

Version 1.2.8
Update plugextra-x.js
Merge pull request #32 from TeeheeLP/master

Hotfix Pull