.gitignore added
modified for different Poisson's ration on left and right
modified for different Poisson's ratio on left and right
corrected modification for different Poisson's ratio on left and right; added more tests to simplify comparison with SUB_RTstep_Galerkin.m (wave from left only)
ignore files in tmp directory
stop printing out variables
move kernel matrix and forcing vectors to separate function
tidying of 2 files
Follow-up: kernel matrix/forcing vectors

Follow-up: move calculation of kernel matrix and forcing vectors to
separate file