Returned eltype of matrix is float32 when Int was expected

[macd]

Using integer vectors to construct a Toeplitz matrix results in Float32 eltypes. Not at all what I was expecting. I can of course do Toeplitz{Int}([1,2,3], [1,2,3]), but still...

julia v1.3> a = Toeplitz([1,2,3], [1,2,3])
3×3 Toeplitz{Float32,Complex{Float32}}:
 1.0  2.0  3.0
 2.0  1.0  2.0
 3.0  2.0  1.0

julia v1.3> eltype(a)
Float32

[dlfivefifty]

This is one of the motivations for #36

EDIT: Sorry, just saw that Toeplitz{Int} works so this probably not relevant to that issue.