find a better name for fixSeq

[cryptix]

trafficstars

https://github.com/ssbc/epidemic-broadcast-trees/blob/d09e0fe80c9c7a9fde438bc8cfed48ebf05dd5b8/events.js#L49

There is a lot of non-obvious things going on in fixSeq and the comment just roughly outlines the what it is leaning towards.

IIRC it consolidates the remote and local notes which then decides if there are messages to send.