Re: Simplify the tree-sitter parser creation API

[Yuan Fu]

> 
> Thanks! I think it makes sense. Though I’d keep the treesit-parser-create 
> function because it directly corresponds to the tree-sitter C API. I can 
> extend the C definition of treesit-parser-create to 
> 
> (treesit-parser-create LANGUAGE &optional BUFFER NO-REUSE)
> 

And done. Please also see the “main” thread for other changes ;-)

Yuan