I was a long time YCM user but it seemed to slow down my editor, then I switched to ALE and it was much better. I'm curious to see what improvements CoC brings

I was a long time YCM user but it seemed to slow down my editor, then I switched to ALE and it was much better. I'm curious to see what improvements CoC brings to the table. From the screencast it looks like it can automatically add import statements to TypeScript projects which would be a huge productivity boost for me!