Remove `time` pending and syncing logic.
Update `time` and `coins` to account for current session.
Add `Session.duration` for current session duration.
Add `Session.coins_earned` for current session coins.
New `study_time_since` database function from session history.
Add `Lion.timezone`.
Add `Lion.day_start`.
Add `Lion.studied_today`.
Made `Table.queries` an instance variable.
Renamed the session channel types.
Handle arguments to `remove`.
Offer to delete roles where appropriate.
Event log badge deletions.
Fire data and role updates immediately on badge removal.
Improve parser.
Added flexibility to data `update_where`.
Added interactive utils, with improved pager.
Added user data table, with caching and transactional interface.
Added `topcoins` command to `Economy`
Added `top` command to `Study`