Add some theorems about idtoiso and whiskering

After    | File Name                             | Before
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0m26.58s | Comma/Duals                           | 0m23.26s
0m23.52s | Category/Equality                     | 0m24.53s
0m23.18s | Adjoint/Hom                           | 0m25.32s
0m13.44s | Adjoint/Composition                   | 0m12.18s
0m13.16s | Adjoint/UniversalMorphisms            | 0m13.88s
0m12.41s | Adjoint/Duals                         | 0m11.51s
0m11.28s | Adjoint/UnitCounitCoercions           | 0m11.63s
0m08.35s | Comma/InducedFunctors                 | 0m08.32s
0m07.60s | Adjoint/Equality                      | 0m06.32s
0m07.15s | Adjoint/UnitCounit                    | 0m06.30s
0m07.01s | Groupoid                              | 0m07.50s
0m06.26s | Category/Morphisms                    | 0m05.92s
0m04.90s | SumPreCategory                        | 0m04.84s
0m04.57s | Functor/Equality                      | 0m04.51s
0m04.43s | Groupoid/Duals                        | 0m04.42s
0m04.38s | Groupoid/Functors                     | 0m04.14s
0m03.63s | UniversalProperties                   | 0m03.45s
0m03.20s | Comma/CommaCategory                   | 0m02.95s
0m03.14s | NaturalTransformation/Pointwise       | 0m02.30s
0m02.96s | Pseudofunctor/Core                    | 0m03.09s
0m02.85s | Grothendieck/ToSet                    | 0m02.83s
0m02.35s | BoolCategory                          | 0m02.41s
0m02.30s | NaturalTransformation/Isomorphisms    | 0m01.18s
0m01.96s | NaturalTransformation/Duals           | 0m01.98s
0m01.88s | NaturalTransformation/Equality        | 0m01.85s
0m01.82s | Category/Product                      | 0m01.82s
0m01.77s | Hom                                   | 0m01.74s
0m01.60s | Functor/Product                       | 0m01.32s
0m01.46s | NaturalTransformation/Product         | 0m01.43s
0m01.35s | NaturalTransformation/Composition     | 0m01.36s
0m01.33s | NaturalTransformation/CompositionLaws | 0m01.30s
0m00.81s | FunctorCategory/Morphisms             | 0m00.74s
0m00.80s | Cat/Morphisms                         | 0m00.81s
0m00.63s | InitialTerminalCategory               | 0m00.67s
0m00.60s | Functor/Pointwise                     | 0m00.48s
0m00.48s | Comma/Projection                      | 0m00.45s
0m00.46s | Functor/CompositionLaws               | 0m00.42s
0m00.40s | Discrete/Duals                        | 0m00.34s
0m00.39s | Common                                | 0m00.34s
0m00.34s | IndiscreteCategory                    | 0m00.34s
0m00.31s | SetCategory                           | 0m00.31s
0m00.30s | Functor/Duals                         | 0m00.26s
0m00.29s | Cat                                   | 0m00.31s
0m00.29s | FunctorCategory                       | 0m00.31s
0m00.28s | NaturalTransformation/Identity        | 0m00.31s
0m00.26s | Category/Objects                      | 0m00.24s
0m00.23s | NatCategory/Duals                     | 0m00.15s
0m00.22s | IsGroupoid                            | 0m00.22s
0m00.22s | Functor/Composition                   | 0m00.25s
0m00.21s | Category/Core                         | 0m00.21s
0m00.21s | NatCategory                           | 0m00.22s
0m00.18s | Adjoint                               | 0m00.18s
0m00.16s | ComputableCat                         | 0m00.13s
0m00.16s | NaturalNumbersObject                  | 0m00.17s
0m00.16s | Adjoint/Identity                      | 0m00.18s
0m00.14s | Category/Duals                        | 0m00.14s
0m00.14s | NaturalTransformation/Core            | 0m00.18s
0m00.14s | Pseudofunctor                         | 0m00.13s
0m00.13s | Grothendieck                          | 0m00.08s
0m00.12s | Category                              | 0m00.07s
0m00.12s | NaturalTransformation                 | 0m00.14s
0m00.12s | Functor/Identity                      | 0m00.10s
0m00.12s | Peano                                 | 0m00.11s
0m00.11s | Functor                               | 0m00.09s
0m00.11s | Functor/Core                          | 0m00.11s
0m00.10s | Utf8                                  | 0m00.12s
0m00.10s | DiscreteCategory                      | 0m00.09s
0m00.09s | Category/UnivalentCategory            | 0m00.13s
0m00.08s | Category/StrictCategory               | 0m00.08s
0m00.05s | NotationsUtf8                         | 0m00.05s
0m00.03s | Notations                             | 0m00.05s
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3m41.90s | Total                                 | 3m35.30s