now infers dtype from torch Modules when populating representations

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (d2a8529) 93.98% compared to head (556986d) 94.14%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #71 +/- ## ========================================== + Coverage 93.98% 94.14% +0.15% ========================================== Files 29 30 +1 Lines 3427 3483 +56 ========================================== + Hits 3221 3279 +58 + Misses 206 204 -2 ``` | [Flag](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George) | `94.14% <97.50%> (+0.15%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George) | Coverage Δ | | |---|---|---| | [tests/test\_dtypes.py](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George#diff-dGVzdHMvdGVzdF9kdHlwZXMucHk=) | `100.00% <100.00%> (ø)` | | | [nngeometry/generator/jacobian/\_\_init\_\_.py](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George#diff-bm5nZW9tZXRyeS9nZW5lcmF0b3IvamFjb2JpYW4vX19pbml0X18ucHk=) | `98.28% <96.36%> (-0.10%)` | :arrow_down: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/tfjgeorge/nngeometry/pull/71/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Thomas+George)

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