Changes to scripts, especially for running on local PC --- namely, using driver.sh to run everything (instead of scripts in ./scripts/).  Can still call scripts/run.sh to run without recompiling, etc.  Also, first attempt at adding full boundary conditions to the problem file (lzk_flux-capture-1.c), i.e. reflecting, periodic, in/out flow.  Currently set up only for y-direction, and not sure if it works yet.