fix(library/tactic/user_attribute): anonymous attribute names are now allowed
fix(library/tactic/user_attribute): anonymous attribute names are now allowed

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