Documentation improvements + fixes

[asinghvi17]

No description provided.

[asinghvi17]

Looks like CI is failing on ExactPredicates.jl v2.2.7 (Julia 1.10) but not v2.2.5 (Julia 1.6) only when performing certain comparisons of test polygon p1 to itself:

↑ TEST INFO: p1 contains p1 - Same polygons
↑ TEST INFO: p1 coveredby p1 - Same polygons
↑ TEST INFO: p1 covers p1 - Same polygons
↑ TEST INFO: p1 within p1 - Same polygons

This is specifically with p1. None of the other polygons have any issues when self-comparing.

     Testing Running tests...
Contains: Error During Test at /home/runner/work/GeometryOps.jl/GeometryOps.jl/test/methods/geom_relations.jl:170
  Got exception outside of a @test
  ArgumentError: `==` is only supported between thin intervals and numbers
  Stacktrace:
    [1] ==
      @ ~/.julia/packages/IntervalArithmetic/rX8mD/src/intervals/real_interface.jl:149 [inlined]
    [2] ==
      @ ~/.julia/packages/IntervalArithmetic/rX8mD/src/intervals/real_interface.jl:155 [inlined]
    [3] orient_slow(u::Tuple{Float64, Float64}, v::Tuple{Float64, Float64}, w::Tuple{Float64, Float64})
      @ ExactPredicates ~/.julia/packages/ExactPredicates/p3E85/src/Codegen.jl:340
    [4] orient
      @ ~/.julia/packages/ExactPredicates/p3E85/src/Codegen.jl:470 [inlined]
    [5] meet(p::Tuple{Float64, Float64}, q::Tuple{Float64, Float64}, a::Tuple{Float64, Float64}, b::Tuple{Float64, Float64})
      @ ExactPredicates ~/.julia/packages/ExactPredicates/p3E85/src/plane.jl:113
    [6] #_segment_segment_orientation#137
      @ GeometryOps ~/work/GeometryOps.jl/GeometryOps.jl/src/methods/geom_relations/geom_geom_processors.jl:561 [inlined]

and several others. The relevant tests are:

 DE-9IM Geom Relations             |  562      4    566   7.7s
    Contains                        |   70      1     71   4.4s
    Covered By                      |   70      1     71   0.3s
    Covers                          |   70      1     71   0.3s
    Disjoint                        |   85            85   0.4s
    Intersect                       |   85            85   0.2s
    Touches                         |   85            85   0.3s
    Within                          |   70      1     71   0.3s
    Overlaps                        |   22            22   0.5s
    Crosses                         |    5             5   0.5s

[asinghvi17]

Aha, I think they fixed this issue upstream in ExactPredicates. Should be good now!