fixed all shape functions to start with the indices at 0, in order to generate more complete approximations
FIXED pow to multiplication convertion
removed use_cse obsolete parameter
cleaned up and removed deprecated parameters
renamed clpt_donnell4 to clpt_donnell_bcn and removed obsolete models
renamed clpt_donnell4 to clpt_donnell_bcn and removed obsolete models
renamed clpt_donnell4 to clpt_donnell_bcn and removed obsolete models
cleaned up obsolete models