Improve `(New)ZeroMatrix`, `(New)IdentityMatrix`, `(New)ZeroVector` to better reject invalid input#4366

Merged

fingolfin merged 9 commits intogap-system:masterfrom fingolfin:mh/ZeroMatrix

Apr 19, 2021

+555-284

Commits on Apr 14, 2021

Add ZeroVector variants, similar to ZeroMatrix
fingolfin
committed

Commits on Apr 15, 2021