A fully synchronous order book. Artisinal and free from async.

Currently supported functionality:

• Multiple order books (one per symbol)
• Types of orders: market, limit, post-only, stop-loss, stop-limit
• Types of time-in-force: good-till-cancelled, immediate-or-cancel, fill-or-kill, all-or-none

Functionality to be added:

• Types of orders: trailing-stop, market-to-limit, pegged, iceberg/reserved
• Types of time-in-force: good-till-date