Please tag wasi-sdk-21

[cuviper]

Can we get a tag for the new SDK release? Looks like it was at c5264e2.

[abrown]

Ok, I confirmed that is the right commit and pushed the tag wasi-sdk-21 for it. Can you check everything looks as expected on your end?

[cuviper]

Looks right, thanks!

However, I'm now reminded that #378 is outstanding. I had some suggested updates there, so I guess I'll try to submit a PR of my own...