Throw if Fluxbox.FluxMixin used as a mixin instead of a function
Throw if Fluxbox.FluxMixin used as a mixin instead of a function

chimpinano/fluxxor,webcoding/fluxxor,andrewslater/fluxxor,hoanglamhuynh/fluxxor,VincentHoang/fluxxor,chimpinano/fluxxor,demiazz/fluxxor,STRML/fluxxor,alcedo/fluxxor,dantman/fluxxor,chimpinano/fluxxor,dantman/fluxxor,thomasboyt/fluxxor,nagyistoce/fluxxor,davesag/fluxxor,STRML/fluxxor,VincentHoang/fluxxor,dantman/fluxxor,BinaryMuse/fluxxor,hoanglamhuynh/fluxxor,SqREL/fluxxor,davesag/fluxxor,nagyistoce/fluxxor,davesag/fluxxor,hoanglamhuynh/fluxxor,vsakaria/fluxxor,nagyistoce/fluxxor