Event "onselectstart" was removed from the interfaces

[andrui]

Related to the file lib.dom.d.ts
Commit with removal: ee25cde#diff-46fd87925e4552c166ec188712741c3f

[weswigham]

I'd guess because it's experimental.

[Misiu]

Please restore this event. AS mentioned in microsoft/TypeScript-DOM-lib-generator#601 it is supported by various browsers.

[xobotyi]

+1