infrastructure
start digging into c again
same stage works with ideas as structs.
communication works, code clean up.
mpi macros, workload calculation
distribution of the field into threads works.
rename into main.c, +readme.
rename into main.c, +readme.
output from ranks to file out/$rank

sorted output from master-rank, reading the out-files in
numeric order
"static" communication of rows to ghost rows works

"static" means: no movement happens yet.
initial filling of ghost rows. movement procedure sketch
i think the independent movement parts work right
everything works i think

 - dependent rows communication , non blocking for even amount of procs
 (?)
 - movement in dependent regions
output optional, timing
clean up
add readme stuff
add readme stuff
add headers dir to repo ..

was in gitignore..