Add a defmacro builtin
Add a defmacro builtin

timmartin/hy,hcarvalhoalves/hy,ALSchwalm/hy,freezas/hy,tianon/hy,aisk/hy,paultag/hy,Foxboron/hy,kartikm/hy,tianon/hy,aisk/hy,Foxboron/hy,gilch/hy,tianon/hy,aisk/hy,adamfeuer/hy,farhaven/hy,Tritlo/hy,michel-slm/hy,larme/hy,tuturto/hy,farhaven/hy,larme/hy,larme/hy,mtmiller/hy,kirbyfan64/hy,kirbyfan64/hy,hcarvalhoalves/hy,farhaven/hy,jakirkham/hy,zackmdavis/hy,algernon/hy