parse-float dependency
check both base and quote assets for fee info on bitfinex
handle dbz on profit calculation

(this happens when no executions have been detected yet)
rename slot book-output to output, export bids and asks
pay attention to direction when merging trades
working towards execution objects
comment about handling kraken's rate limit
hacky dbz guard

Conflicts:
	qd.lisp
stop patching the binary!
call (vwap trades-tracker) directly
use #:chanl
defmethod print-object trade
methods for maybe-trade pattern
refactor trades-tracker: worker tracks last timestamp
now THAT's a bug!
add string-case dependency
kraken-gate emulates api counts
(rehome-class 'execution-tracker "scalpl.exchange")
a thought
account-tracker tracks each market's execution separately