…and classes

SWI-cpp2-plx.h contains wrapper functions (imported from SWI-cpp2.h)
- throw PlException for Prolog errors
- most SWI-Prolog.h functions have a wrapper.
verify() methods removed from PlAtom, PlTerm, etc.
- the wrapper functions do the checking.
Some executable code has been moved to SWI-cpp2.cpp
- can be inlined, if desired.
PlException is now a subclass of std::exception, not a subclass of PlTerm.
PlTypeError, PlDomainError, etc. are no longer subclasses of PlTerm,
  but are functions for creating suitable PlException objects.
The string comparison operators are deprecated; use as_string()
  and std::string comparison instead, which allows specifying the encoding.
Added PlRecord, PlRecordExternal,  PlControl (used by PREDICATE_NONDET),  PlStream.
Fixed numerous bugs and misfeatures; added tests.

…and classes

SWI-cpp2-plx.h contains wrapper functions (imported from SWI-cpp2.h)
- throw PlException for Prolog errors
- most SWI-Prolog.h functions have a wrapper.
verify() methods removed from PlAtom, PlTerm, etc.
- the wrapper functions do the checking.
Some executable code has been moved to SWI-cpp2.cpp
- can be inlined, if desired.
PlException is now a subclass of std::exception, not a subclass of PlTerm.
PlTypeError, PlDomainError, etc. are no longer subclasses of PlTerm,
  but are functions for creating suitable PlException objects.
The string comparison operators are deprecated; use as_string()
  and std::string comparison instead, which allows specifying the encoding.
Added PlRecord, PlRecordExternal,  PlControl (used by PREDICATE_NONDET),  PlStream.
Fixed numerous bugs and misfeatures; added tests.

…into exceptions-cleaned