(turns out remove_item was wrong anyway, i wanted to remove all instances of a string, it only removed the first)

this sneaks in a big change on self-replies, now removes the @ mention of you if you reply to yourself

also set current profile to first auth'd account, when starting from a
blank slate.

silence follower changes because it's not sanely displayed yet (and may
never be)

also clean up a bunch of TODOs

tweets are now recorded with the date they are recieved at

dated id lookup is now supported

tweet ids, where displayed, are displayed in a convenient form:
  if the tweet was recieved today, show the today id
  if the tweet was recieved on a different day, show the bare id

many instances where display_info was passed for logging information,
the parameter has become unnecessary, so it's gone now

what a mess... threading this through to any point where printing happens is upsetting. probably should be a global mutable behind accessors.

also ... include profile command file, which i neglected to include in a prior commit

open issues: something is wrong with loading settings - something gets
replayed from main account to alternate accounts.

auth'ing a new account doesn't set handle, name, etc.

i think most issue are because events aren't recorded with what
connection they came from - welcome event for any account gets replayed
onto curr_profile because we simply don't know which connection the
event was from.

the same will happen for twitter events, but those aren't logged.

add connection state tracked per-stream, add explicit TwitterProfile
mapped to names that can be used for accounts. default names are the
handle of the corresponding twitter account.

partition out user Credential to be per TwitterProfile, so fav, reply,
etc, all come from the selected account. Multiplex twitter connections
and message streams across chan (instead of earlier plan, which was to
have one chan per thread)