Simple example returns empty root

[Kolaru]

The last root in the following looks wrong:

julia> using IntervalRootFinding

julia> roots(x -> 1/x, interval(-Inf, Inf))
4-element Vector{Root{Interval{Float64}}}:
 Root([-3.35274e-8, 1.94455e-8]_dac, :unknown)
 └ Not converged: region size smaller than the tolerance
 Root((-∞, -1.79769e+308]_dac, :unknown)
 └ Not converged: reached maximal number of iterations
 Root([1.79769e+308, ∞)_dac, :unknown)
 └ Not converged: reached maximal number of iterations
 Root(∅_trv, :unknown)
 └ Not converged: reached maximal number of iterations

It is not incorrect to say that an empty interval contains no root, but unhelpful and a bit concerning: all empty intervals should be properly removed before being returned.