doc(doc/todo): update TODO list
doc(doc/todo): update TODO list

Signed-off-by: Leonardo de Moura <7610bae85f2b530654cc716772f1fe653373e892@microsoft.com>

codyroux/lean0.1,soonhokong/lean-windows,fpvandoorn/lean,fgdorais/lean,Kha/lean,sp3ctum/lean,digama0/lean,leanprover/lean,javra/lean,UlrikBuchholtz/lean,leanprover/lean,codyroux/lean0.1,leanprover-community/lean,avigad/lean,fgdorais/lean,dselsam/lean,htzh/lean,avigad/lean,rlewis1988/lean,soonhokong/lean,avigad/lean,c-cube/lean,eigengrau/lean,javra/lean,UlrikBuchholtz/lean,javra/lean,dselsam/lean,fgdorais/lean,fpvandoorn/lean,fpvandoorn/lean2,eigengrau/lean,UlrikBuchholtz/lean,rlewis1988/lean,UlrikBuchholtz/lean,digama0/lean,soonhokong/travis_test,dselsam/lean,soonhokong/lean-windows,c-cube/lean,javra/lean,fpvandoorn/lean2,soonhokong/lean,fpvandoorn/lean,fpvandoorn/lean,c-cube/lean,codyroux/lean0.1,fpvandoorn/lean2,leodemoura/lean,fgdorais/lean,htzh/lean,leodemoura/lean,digama0/lean,c-cube/lean,leodemoura/lean,johoelzl/lean,Kha/lean,avigad/lean,sp3ctum/lean,rlewis1988/lean,avigad/lean,dselsam/lean,soonhokong/lean,rlewis1988/lean,htzh/lean,fgdorais/lean,soonhokong/lean-windows,dselsam/lean,fpvandoorn/lean,UlrikBuchholtz/lean,soonhokong/lean-osx,johoelzl/lean,soonhokong/travis_test,soonhokong/lean-osx,leanprover-community/lean,leanprover/lean,soonhokong/lean-osx,Kha/lean,levnach/lean,johoelzl/lean,fgdorais/lean,fpvandoorn/lean,Kha/lean,eigengrau/lean,Kha/lean,levnach/lean,javra/lean,sp3ctum/lean,soonhokong/travis_test,c-cube/lean,avigad/lean,soonhokong/lean,johoelzl/lean,eigengrau/lean,levnach/lean,digama0/lean,codyroux/lean0.1,soonhokong/travis_test,leodemoura/lean,sp3ctum/lean,fpvandoorn/lean2,fpvandoorn/lean2,soonhokong/lean-osx,rlewis1988/lean,leodemoura/lean,johoelzl/lean,leanprover/lean,leanprover/lean,leanprover-community/lean,levnach/lean,htzh/lean,levnach/lean,eigengrau/lean,leanprover-community/lean,sp3ctum/lean,Kha/lean,digama0/lean,leanprover-community/lean,johoelzl/lean,digama0/lean,leanprover/lean,soonhokong/lean-windows,dselsam/lean,leodemoura/lean,rlewis1988/lean,soonhokong/lean-windows,leanprover-community/lean,soonhokong/lean-osx,soonhokong/lean,htzh/lean