feat(hott): add lemma: cofiber of terminal morphism is suspension
feat(hott): add lemma: cofiber of terminal morphism is suspension

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