Previously, I had banned handling message editing because limbo's
messages are echoed back as message edits and it was an easy way to
ignore our own messages to prevent message loops.
Handle message update and delete
use the on_message_changed and on_message_deleted functions to
handle them, respectively
test message update and delete
add user id to slack server
may be useful in the future, easy to add
return to manually checking for self messages and slackbot messages
do people want to handle slackbot messages in plugins?
Previously, I had banned handling message editing because limbo's messages are echoed back as message edits and it was an easy way to ignore our own messages to prevent message loops.
on_message_changedandon_message_deletedfunctions to handle them, respectivelyFixes #78