[BREAK CHANGE] workspace.onWillSaveUntil method will be removed

[chemzqm]

workspace.onWillSaveTextDocument will always emit event with waitUntil(thenable: Thenable<TextEdit[] | any>): void method, use that instead.

Each handler will be called for textEdit[], and only the first returned textEdit[] (not empty) would be applied to the document, this is the same behavior as VSCode,

Multiple formatters won't work in subsequence any more (which can be buggy), create BufWritePre autocmd in your vimrc for that purpose.

[fannheyward]

Does formatOnSaveFiletypes still work?

[chemzqm]

It should still work.

[develra]

Heya - apologies for the ignorance:
https://github.com/neoclide/coc-tslint-plugin/blob/master/src/index.ts#L38
Should this be updated to

workspace.onWillSaveTextDocument

?
Thanks!

{edit: attempt at a fix - https://github.com/neoclide/coc-tslint-plugin/pull/10}