feat(library/data/bool): add auxiliary theorems
feat(library/data/bool): add auxiliary theorems

levnach/lean,fpvandoorn/lean2,leanprover/lean,leanprover-community/lean,javra/lean,htzh/lean,fpvandoorn/lean2,levnach/lean,UlrikBuchholtz/lean,soonhokong/lean-windows,fgdorais/lean,dselsam/lean,rlewis1988/lean,avigad/lean,fpvandoorn/lean2,c-cube/lean,levnach/lean,rlewis1988/lean,fpvandoorn/lean,javra/lean,rlewis1988/lean,javra/lean,eigengrau/lean,fgdorais/lean,fpvandoorn/lean,fgdorais/lean,avigad/lean,dselsam/lean,rlewis1988/lean,johoelzl/lean,rlewis1988/lean,eigengrau/lean,avigad/lean,leodemoura/lean,avigad/lean,fpvandoorn/lean,avigad/lean,Kha/lean,leanprover-community/lean,digama0/lean,fpvandoorn/lean,c-cube/lean,eigengrau/lean,soonhokong/lean,digama0/lean,Kha/lean,htzh/lean,fgdorais/lean,johoelzl/lean,htzh/lean,sp3ctum/lean,soonhokong/lean,leanprover/lean,fgdorais/lean,fpvandoorn/lean2,sp3ctum/lean,javra/lean,fpvandoorn/lean,leodemoura/lean,digama0/lean,leodemoura/lean,soonhokong/lean-osx,leanprover/lean,soonhokong/lean-windows,leanprover/lean,johoelzl/lean,dselsam/lean,leanprover/lean,leodemoura/lean,fpvandoorn/lean,eigengrau/lean,leanprover-community/lean,soonhokong/lean-windows,sp3ctum/lean,soonhokong/lean-osx,sp3ctum/lean,levnach/lean,Kha/lean,Kha/lean,dselsam/lean,UlrikBuchholtz/lean,soonhokong/lean-windows,soonhokong/lean-windows,leanprover-community/lean,fpvandoorn/lean2,soonhokong/lean-osx,eigengrau/lean,UlrikBuchholtz/lean,levnach/lean,digama0/lean,johoelzl/lean,UlrikBuchholtz/lean,digama0/lean,UlrikBuchholtz/lean,dselsam/lean,leanprover-community/lean,leodemoura/lean,rlewis1988/lean,leanprover/lean,johoelzl/lean,htzh/lean,soonhokong/lean,leanprover-community/lean,dselsam/lean,avigad/lean,digama0/lean,johoelzl/lean,htzh/lean,soonhokong/lean,c-cube/lean,c-cube/lean,leodemoura/lean,soonhokong/lean,Kha/lean,javra/lean,c-cube/lean,fgdorais/lean,soonhokong/lean-osx,Kha/lean,soonhokong/lean-osx,sp3ctum/lean