Allocation Tests fail in julia 1.4

[mzgubic]

The following two tests fail in Julia 1.4:

NamedDims.jl/test/wrapper_array.jl

Lines 234 to 236 in d735031

	@test 0 == @allocated NamedDimsArray(cnda, (:x, :y))
	if VERSION >= v"1.1"
	@test 0 == @allocated NamedDimsArray(cnda, (:x, :_))

[oxinabox]

I think we actually do need to use @ballocated here.
And with that change sometimes i can get it down to 0 in REPL and sometimes I can't
and for some reason in the tests i can't get it below 16.

Something to playwith is disabling the compiletime_return_hack which isn't require in 1.3+ IIRC