Added ToString method for Mutability struct

[martindevans]

Added ToString method for Mutability struct

[martindevans]

It looks like the CI test runner crashed, I'm not sure why. Tests pass locally.

[peterhuene]

I suspect we need to sync to bytecodealliance/wasmtime#5683. The reason it's probably not crashing for you locally is you're using a slightly older Wasmtime library from a previous build. Cleaning your repo to redownload the latest dev build would likely show it (which is how the CI operates).

Unrelated to the crash, CI's been flaky on Windows for an unknown reason (occasionally fails to download the wasmtime tarballs from GitHub).

I'll see about getting CI fixed shortly.

[peterhuene]

I put up #221 to fix CI; we can merge that and then rebase this PR on top.

[peterhuene]

If we rebase this, I'll merge with a (mostly) green CI.

This and the other PR (#219) will go into the 7.0.0 release, unfortunately, unless you really need me to backport either to the 6.0 release which is imminent.

[martindevans]

Rebased onto main.

go into the 7.0.0 release

That's fine, neither are critical on my end :)