rename session connect/disconnect -> created/closing/closed

[jackyzha0]

Why

nomenclature of 'connected'/'disconnected' is an artifact of when sessions were what connections are today, thats no longer accurate

this also allows us to disambiguate the 'about to close' state and 'already closed' state

these have two different cases:

1. about to close -> do any last minute cleanup and send things to the otherside before we totally yank the connection
2. already closed -> consumers can do things like manually open a new session if an old session is closed

What changed

1. rename 'connect' -> 'created', 'disconnect' -> 'closing'
2. add a new 'closed' state which is emitted after the cleanup is done
3. fix a case where we could loop infinitely by mutating a map while iterating its values
4. add a test for the create a new session after previous session is gone case

Versioning

• Breaking protocol change
• Breaking ts/js API change

[lhchavez]

1️⃣ wen

if there's no good answer, let's do it on Apr 1 (pls also blogpost)

[jackyzha0]

yes i'd like to! faris thinks that we need more docs but tbd on what we still need there