let's assume current feed price is 0.02USD/BTS
the ask order:
a1. 0.019
a2. 0.02
....
the short order:
b1. interest 10%, limit 0.025
b2. interest 30%, limit 0.019
the bid order:
c1. 0.0195
c2. 0.018
which two orders will execute first?
from the source code, looks like a1 match b2 first, am I wrong?