Expression parser: simplified vector-length and type checking/promotion.
Expression parser: simplified vector-length and type checking/promotion.

radarsat1/libmapper,libmapper/libmapper,davidhernon/libmapper,libmapper/libmapper,johnty/libmapper,libmapper/libmapper,malloch/libmapper,davidhernon/libmapper-admin2,johnty/libmapper,johnty/libmapper,davidhernon/libmapper,davidhernon/libmapper,radarsat1/libmapper,libmapper/libmapper,malloch/libmapper,libmapper/libmapper,davidhernon/libmapper-admin2,davidhernon/libmapper-admin2,davidhernon/libmapper,malloch/libmapper,malloch/libmapper,davidhernon/libmapper-admin2,radarsat1/libmapper,radarsat1/libmapper,libmapper/libmapper,johnty/libmapper,johnty/libmapper,malloch/libmapper,davidhernon/libmapper-admin2,davidhernon/libmapper,radarsat1/libmapper,malloch/libmapper