so it's been a bit since i dealt with multiple threads, so i think this will be
fine but im not 100% sure, i will be splitting up some data into a grid, each
thread does one grid cell until it's done, and passes off the data to other
cells before going onto another cell

is an array of seqs on its own fine, where the center index is used for the
calculations, and then at the end it either moves them in its array (and the
thread in a neighbor appends from that) or it writes to a neighbor's non-center
index of that grid (and the neighbor appends from its own to its center)? each
grid would be handled by one thread at a time, and each way for threads to
communicate across grid cells has its own channel essentially, thus not needing
`Lock`s?