Fix OncePerTask usage with datatypes for --trim

[fredrikekre]

No description provided.

[quinnj]

Can you give me quick why here just for my own understanding?

[fredrikekre]

Since there are no constructors for ::Type{T} we end up with the generic DataType as the initializer:

julia> OncePerTask{BigFloat}(BigFloat)
(::OncePerTask{BigFloat, DataType}) (generic function with 1 method)

julia> OncePerTask{BigFloat}(() -> BigFloat())
(::OncePerTask{BigFloat, var"#19#20"}) (generic function with 1 method)

This should perhaps be fixed in Base but fixing it here has less inertia for now :)

[quinnj]

Sounds good. As soon as github stops spinning, we can merge; need a new release w/ this?

[quinnj]

[fredrikekre]

Yea, I have pushed another commit to my branch to bump the version but that isn't visible on this PR for some reason. Let me try to force push...