to study the pairing or not-pairing of `<` and `>` with Tree-sitter

and electric-pair-mode.

One of the high hopes that I had for tree-sitter modes is that

it would help electric-pair-mode decide what to do depending

on the syntactic situation.  So it would pair < and > in template

argument lists but not when < or > are being used as 

comparison operators.

I wish Stefan or Yuan Fu would comment here.