Proposal: Pathify version 2 and 3

[davestewart]

The next version of Vuex Pathify will be compatible with Vue 3, and it is more or less ready.

I would also like to move to TypeScript, but I don't have the time to do that right now. I would also like to migrate the current 1.x version of Pathify to TypeScript, but this probably happen after the Vue 3 compatible version has been released, so will be back-ported.

As such, I am considering an interim major release for Vue 2, which will result in the version numbers aligning with the Vue version numbers:

Release	Vue Version	Language	Notes
1.x	2	JS	Current version
2.x	2	TS	Will release after 3.0
3.0.0-beta	3	JS
3.x	3	TS

The Vue 3 JS version (beta) will be released later today, then I'll work on the TS versions as I have time.

If anyone has any comments, feel free to leave below.