Add Minimum Supported Version

[king-11]

Each cargo crate must specify a minimum supported version so that developers can abide by it

[unicodeveloper]

Hey @king-11 We don't need new issues created on this repo right now because there are several other issues that needs to be attended to.

We appreciate your contributions so far and we'd like you to take from existing issues on this repo.

[king-11]

😅 okay sure