feat(frontends/lean): improver parser for tactics of the form 'tac_name <expr> with <ids*>'
feat(frontends/lean): improver parser for tactics of the form 'tac_name <expr> with <ids*>'

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