Fix codim for subIndex() method
For an entity e with codim=cc subIndex(e,i,codim) is only available for cc<=codim<=dim. Instead of checkoing for codim=0 we now check for all codims in this range.
This fixed an issue mentioned in #37.
For an entity e with codim=cc subIndex(e,i,codim) is only available for cc<=codim<=dim. Instead of checkoing for codim=0 we now check for all codims in this range.
This fixed an issue mentioned in #37.