from deribit, using cryptofeed library, this functions are located
in the deribit's api module.
Changes:
1. Add and fix auxiliar functions for handling cryptofeed data.
2. Add aio open interest functions for context management and cryptofeed conexions.
3. Some typos and format fixes too.
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.