Reduce the number of API calls for numeric converters.
Reduce the number of API calls for numeric converters.

Wohlhabend-Networks/luabind-deboostified,MrApplejuice/luabind,lonski/luabind,alex85k/luabind,luabind/luabind,alex85k/luabind,grafi-tt/luabind,rpavlik/luabind,luabind/luabind,ltjax/luabind-deboostified,Oberon00/luabind,galek/luabind-deboostified,mdave88/luabind,rpavlik/luabind,rpavlik/luabind,rpavlik/luabind,luabind/luabind,luabind/luabind,decimad/luabind-deboostified,alex85k/luabind,plsytj/luabind,mapbox/luabind,Kazade/luabind-deboostified,rpavlik/luabind,davidar/luabind,Oberon00/luabind,alex85k/luabind