This allows most of our precedence to be re-used. There are some cases
still where tree-sitter gets confused (and we don't), see the
corresponding change to grammar.py. I wish I knew how to fix this but
I don't. :(
Tree sitter doesn't let me do token-based precedence? I don't like
tree-sitter's "make it inline but give it a number" system- seems like
a bug farm to me.
