Merge branch 'coffe1891-master'

[UPD] should support multi instance for playing

Merge branch 'coffe1891-master'

[UPD] merge and build to 1.3.4

fix postmessage null error

Merge branch 'master' of https://github.com/qiaozi-tech/WXInlinePlayer

Merge pull request #33 from qiaozi-tech/dependabot/npm_and_yarn/lodas…

…h-4.17.19

Bump lodash from 4.17.15 to 4.17.19