Pattern corr calc works
Comment out code and move to statshelper.py. Function for within ens pattern corr.
Change test for if season vs month to test for type()
Add bimonthly averages to seasonalize_monthlyts(). Just ND, JF, SO for now.
Add plot_pattcorrs()
Add args to get_simsdict(). Add concatenated sims to simsdict. Other improvements
Add more plottypes
Add timetosig calcs to calc_seasons and new function plot_seasonal_maps(). Old func of that name now calc_plot_seasonal_maps(). Eventually get rid of
Add bimonthly option, timetosig plottypes, concatenated sims options.