- To calculate the `max_pain` first we need an expiration date,
get_expiration_dates()` retrieves them and the user then enters one of
the shown, then using the select expiry_date on `get_instruments()` we
are good to build the `oi_by_strikes` important!
- Add `update_oi_by_strikes()`.
- Add `check_if_complete()`.
- `get_max_pain()`: here's where all the action takes place, the
`oi_by_strikes` must be complete to start the calculations,
- Use `maybe_open_oi_feed` for open a oi_feed.
- Add `max_pain_readme.rst`
Shows how to boot the piker runtime, submit an order to the ems, cancel
said order right away. NOTE, this uses piker's built in paper engine but
can be easily tweaked to use a live backend at the user's whim.
Nelson Torres
Tyler Goodlet