fix bone parity
++ process-ack-message
|= [=message-num ok=?]
^+ peer-core
- :: if even bone, ack is on "subscription update" message; no-op
+ :: if odd bone, ack is on "subscription update" message; no-op
::
- ?: =(0 (end 0 1 bone))
+ ?: =(1 (end 0 1 bone))
peer-core
- :: odd bone; is this bone a nack-trace bone?
+ :: even bone; is this bone a nack-trace bone?
::
?: =(1 (end 0 1 (rsh 0 1 bone)))
:: nack-trace bone; assume .ok, clear nack from |message-still
