Support for React 18

[CodeMaven]

Does not work with react 18+ without forcing it.

npm ERR! react@"^18.2.0" from the root project
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer react@"^16.0.0" from equation-editor-react@0.0.10
npm ERR! node_modules/equation-editor-react
npm ERR! equation-editor-react@"^0.0.10" from the root project

[V0XNIHILI]

Hey! Thanks for opening the issue! I will not have time very soon to fix this, so feel free t open a PR and I'll merge it!

[V0XNIHILI]

I just created a new branch + PR (#69) as a base to for React 18. As I haven't worked with React for over a year, I am not sure how to work with some of the new ref APIs. If you have time, it would be great if you could contribute to solving a few of these issues so that the package works fully with React 18. Let me know!

[lpleahy]

I haven't been able to spend much time looking into PR #69, but is this repo on your radar at all still @V0XNIHILI? I'd love to be able to use this with React 18+!