Support for HalfIntegers?

[jagot]

Would it be interesting to support HalfIntegers.jl?

Currently, I see the following:

julia> using HalfIntegers, RationalRoots

julia> signedroot(half(1))
0.7071067811865476

julia> signedroot(Rational(half(1)))
+√(1//2)

[Jutho]

Is this very important? Since there is no AbstractRational it is not so easy to do this. A package extension could be used, but that seems overkill.

I tried with signedroot(RationalRoot, half(1)), but that does not work because Base.rationalize(::HalfInteger) is not defined. That would probably be a useful addition to HalfIntegers.jl

[jagot]

Probably not very important :)