feat(compiler/erase_irrelevant): rec => cases_on
feat(compiler/erase_irrelevant): rec => cases_on

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