Add boundary projections to solution structure.
Inline int/side poly accessors.
Add new mesh method fn intg_mixed_global_and_facerel_fn_on_fe_int.
'Wg' -> 'WG', add error estimates module and separate wg solution module.
Fix logic reversal when testing for interior supported element.
Minor clean in err_L2_norm.
Change new*() functions to return by value instead of owned pointer.
Change new*() function to return by value instead of owned pointer.
Added main module for actual test of WG method.
Added start of presentation.