Dendrite does not implement MSC3375 (Room v9)

[BratishkaErik]

Background information

• Dendrite version or git SHA: commit ba2f456
• Monolith or Polylith?: Monolith
• SQLite3 or Postgres?: Postgres
• Running in Docker?: No
• go version: go1.17.2 linux/amd64

Logs:
M_INCOMPATIBLE_ROOM_VERSION: Your homeserver does not support the features required to interact with this room

[BratishkaErik]

I will test b4a007e

UPD: still don't work

[neilalexander]

Joining v8 and v9 rooms should work as of v0.5.1.