around-each with non-interwoven ordering

[edenworky]

as per #31

[seancorfield]

This looks pretty good to me.

[NoahTheDuke]

i don't like the difference between before/around/after and around-each/before-each/after-each, but i think that's going to be largely immaterial, and if i'm going to make a change, it would be to move before and after inside around. i think this is good overall, and i'm glad that adding it was relatively easy for you. i have a fairly big pr in the works (#33) so i'll probably merge this manually to get it synced up with that one, and then cut a release. i'm not sure exactly when i'll do that this week, but it'll be soon.

thanks so much for the help!

[NoahTheDuke]

i manually merged/rebased with jj, which changed the commit hashes:

• 9e09d7d
• 6270974
• 8f66524