Issue with clipping on coverage-like polygons

[asinghvi17]

When performing clipping on coverages, you often run into a situation where a polygon is fully enclosed by the coverage, but there is one point at which there are two outer polygon points and one inner polygon point. Here's what I mean:

import GeometryOps as GO, GeoInterface as GI

outer = GI.Polygon([GI.LinearRing(Tuple{Float64, Float64}[
    (0, 0),
    (1, 0),
    (1, 0.5),
    (0.5, 0.1),
    (0.1, 0.5),
    (0.5, 0.9),
    (1, 0.5),
    (1, 1),
    (0, 1),
    (0, 0)
])])

inner = GI.Polygon([GI.LinearRing(Tuple{Float64, Float64}[
    (1, 0.5),
    (0.5, 0.1),
    (0.1, 0.5),
    (0.5, 0.9),
    (1, 0.5),
])])

Now if you try to union, intersection or difference these, strange things happen.