Sometimes, last_message_id points to a message in a channel that is "not
found". This is OK because we're just figuring out when the last message
was sent, and we use the current time instead.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
* When fetching the chat history, we don't use the default limit of 100
and set it to unlimited.
* For every 1000 messages recorded in the history, we report that in the
debug log.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
