changes in validation script to deal with hold out proportion at monthly time scale

raster script prediction modifications to deal with for monthly hold out

master script test modifications with range of monthly hold out with zero

dealing with memory swap overload, daily devation debugging following change in monthly outputs

daily deviation function and CAI function, modifications for monthly hold out

modifications for monthly hold out in raster prediction script

first modifications for hold out at monthly timescale, master script and monthly sampling function

contribution covariates fig and tables for manuscript

contribution of covariates fig and tables for paper, functions used in script

initial commit contribution of covariates functions for paper