Expression parser: add operation-by-zero results to op_table.
Expression parser: add operation-by-zero results to op_table.

johnty/libmapper,radarsat1/libmapper,johnty/libmapper,libmapper/libmapper,malloch/libmapper,libmapper/libmapper,libmapper/libmapper,radarsat1/libmapper,johnty/libmapper,libmapper/libmapper,malloch/libmapper,malloch/libmapper,johnty/libmapper,libmapper/libmapper,malloch/libmapper,radarsat1/libmapper,libmapper/libmapper,johnty/libmapper,radarsat1/libmapper,malloch/libmapper,radarsat1/libmapper,malloch/libmapper