Change Discrete/Duals back; it seems to work
Prove some things about functor equality proofs

After    | File Name                             | Before
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0m16.75s | Category/Equality                     | 0m16.32s
0m11.41s | UniversalProperties                   | 0m10.92s
0m10.84s | Comma/CommaCategory                   | 0m10.80s
0m10.58s | Comma/Duals                           | 0m10.14s
0m09.39s | Groupoid                              | 0m08.82s
0m08.82s | Comma/InducedFunctors                 | 0m08.74s
0m07.19s | Category/Morphisms                    | 0m07.15s
0m04.53s | SumPreCategory                        | 0m04.57s
0m04.26s | Functor/Equality                      | 0m03.10s
0m04.01s | Groupoid/Duals                        | 0m03.98s
0m03.42s | Groupoid/Functors                     | 0m03.27s
0m02.69s | Grothendieck/ToSet                    | 0m02.94s
0m02.40s | BoolCategory                          | 0m02.43s
0m02.16s | NaturalTransformation/Equality        | 0m02.14s
0m01.90s | Category/Product                      | 0m01.94s
0m01.80s | NaturalTransformation/Duals           | 0m01.83s
0m01.64s | Hom                                   | 0m01.75s
0m01.42s | NaturalTransformation/Composition     | 0m01.46s
0m01.22s | NaturalTransformation/CompositionLaws | 0m01.29s
0m01.13s | InitialTerminalCategory               | 0m01.04s
0m01.04s | Comma/Projection                      | 0m01.04s
0m01.01s | Functor/Product                       | 0m01.06s
0m00.96s | NaturalTransformation/Product         | 0m00.99s
0m00.52s | Common                                | 0m00.53s
0m00.46s | Functor/CompositionLaws               | 0m02.17s
0m00.40s | Cat                                   | 0m00.30s
0m00.32s | Discrete/Duals                        | 0m00.39s
0m00.30s | NaturalTransformation/Identity        | 0m00.29s
0m00.28s | IndiscreteCategory                    | 0m00.26s
0m00.28s | FunctorCategory                       | 0m00.28s
0m00.27s | SetCategory                           | 0m00.30s
0m00.24s | Functor/Duals                         | 0m00.23s
0m00.24s | Functor/Composition                   | 0m00.24s
0m00.24s | NatCategory/Duals                     | 0m00.22s
0m00.24s | Adjoint/UnitCounit                    | 0m00.22s
0m00.23s | Category/Objects                      | 0m00.20s
0m00.22s | NatCategory                           | 0m00.22s
0m00.21s | IsGroupoid                            | 0m00.23s
0m00.18s | ComputableCat                         | 0m00.13s
0m00.17s | NaturalTransformation/Core            | 0m00.16s
0m00.16s | NaturalNumbersObject                  | 0m00.15s
0m00.15s | Category/Core                         | 0m00.19s
0m00.13s | NaturalTransformation                 | 0m00.10s
0m00.13s | Functor/Identity                      | 0m00.08s
0m00.13s | Category/Category                     | 0m00.10s
0m00.13s | Category/Duals                        | 0m00.13s
0m00.12s | Functor                               | 0m00.12s
0m00.12s | Functor/Core                          | 0m00.13s
0m00.12s | Utf8                                  | 0m00.09s
0m00.10s | DiscreteCategory                      | 0m00.10s
0m00.10s | Peano                                 | 0m00.12s
0m00.10s | Grothendieck                          | 0m00.08s
0m00.07s | Category/StrictCategory               | 0m00.10s
0m00.06s | NotationsUtf8                         | 0m00.05s
0m00.04s | Notations                             | 0m00.04s
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1m57.03s | Total                                 | 1m55.67s