Update tree-sitter crate dependency to >=0.21

[alexle0nte]

#148

[marco-c]

@fwcd or @VladimirMakaev could you take a look?

[HerringtonDarkholme]

BTW, tree-sitter 0.24.0 also introduced a new breaking change to, say, not introduce breaking change.

https://github.com/tree-sitter/tree-sitter-html/pull/107/files#diff-2e9d962a08321605940b5a657135052fbcef87b5e360662bb527c96d9a615542

the new tree-sitter-language will be a standalone crate stable enough to not relying on tree-sitter library itself.

[wetneb]

The changes in tree-sitter 0.24 are actually backwards compatible, meaning that tree-sitter 0.24 works with grammars written for tree-sitter 0.23. So I think it would be very helpful to relax the dependency constraint and let folks use the parser with newer versions of tree-sitter:

Suggested change

	tree-sitter = "0.23"
	tree-sitter = ">=0.23"

(or even >=0.21 if you want to support older versions too)

[joowani]

Any update on this? Thanks

[wetneb]

@fwcd is anything holding you back from merging this?

If this is still not merged and released in the coming weeks, I am planning to fork this crate into an organization with a governance system to enable people to step in for maintenance tasks like this one.

[wetneb]

@ObserverOfTime kindly pointed out to me that another tree-sitter grammar for kotlin is being developed here:
https://github.com/tree-sitter-grammars/tree-sitter-kotlin, so there is no need to make another fork.
Apparently, that grammar is not ready for production use yet, but for my purposes it seems to work well (even better than this one in one respect).

It is uploaded as tree-sitter-kotlin-ng on crates.io and is compatible with tree-sitter 0.23+.