Things need to be stored in a volume, so we also add a bunch of configuration options for moving the persistence around.

Fix UserClientTool - #152, #153 and #154

Don't try to upload content missing a URL.

Warn about encrypted rooms

insert attachment messages into the store as well

Clarify where to specify appservice protocols

[WIP] Add support for custom discord emojis

Basic support for message edits

Fix a couple typos thanks to tests.

MatrixRoomHandler Tests

Subscribe to and format Discord message edits.