feat(algebra/category/Module): allow writing (0 : Module R) (#6249)
feat(algebra/category/Module): allow writing (0 : Module R) (#6249)




Co-authored-by: Scott Morrison <63f04b4d96235eb042cc46d94f14d241d2a26722@gmail.com>

leanprover-community/mathlib,leanprover-community/mathlib