Wrote some functions to get the previous or next columns. The columns are now defined via two parallel arrays ... still figuring out the best way to generalize this so that I don't have to hard-code in the columns. I also need to investigate when the indices for the view functions are being built and whether deploying is blowing them away.
WIP -- terminal misfire caused spurious git commit.
The column switching now has very rudimentary support. The design is currently pretty bad. Will need refactored once I build iteration one and figure things out.