Add setSourceContent method to SourceNode.
as proposed here.
I've updated this to copy sourcesContent in fromStringWithSourceMap too. (#50)
@fitzgen please consider merging this. It's really important for me. 😄
Yes, I am getting to it.
Looks good, I would just like to see a test specifically for walkSourceContents since we are exposing it publicly.
add setSourceContent as method to SourceNode