"Copy Full Code" not working on Safari

[jefffriesen]

This is minor and annoying to fix but it was a stumbling block for me.

The "Copy Full Code" didn't copy anything and the examples didn't have the complete data in it. Because I didn't realize this worked other browsers, I went digging through the repo to find the data.

I think this is what's not supported in Safari:

semiotic-docs/src/DocumentFrame.js

Line 233 in 1b9534c

document.execCommand("copy")

Unfortunately, I don't have time right now to make a PR.

I understand if you would want to mark this as wontfix and move on. If you do want to fix it, here are some resources:
https://stackoverflow.com/questions/40147676/javascript-copy-to-clipboard-on-safari
https://github.com/zenorocha/clipboard.js
https://github.com/feross/clipboard-copy

Thanks