Constructor of Interval inherently type unstable?

[KristofferC]

It seems impossible to create an interval (closed, open) in a type stable manner:

julia> @code_warntype Interval{Int,Closed,Open}(1, 2)
...
Body::Union{Interval{Int64, Closed, Open}, Interval{Int64, Open, Closed}}

It seems very strange that a constructor with all parameters specified could return a different type. That behavior seems deprecated though:

Intervals.jl/src/interval.jl

Lines 62 to 71 in 0513348

	elseif l ≤ f
	# Note: Most calls to this inner constructor will be from other constructors
	# which may make it hard to identify the source of this deprecation. Use
	# `--depwarn=error` to see a full stack trace.
	Base.depwarn(
	"Constructing an `Interval{T,X,Y}(x, y)` " *
	"where `x > y` is deprecated, use `Interval{T,Y,X}(y, x)` instead.",
	:Interval,
	)
	return new{T,R,L}(l, f)

Could there be a release with that deprecation removed?

[omus]

The deprecated changes in Intervals have been around for a good amount of time now and I'm definitely onboard with making a breaking release to clear them out.