Torch 2.0 Compatibility

[atong01]

Test all pytorch versions

Bump allowable torch version requirement

[atong01]

Fixes #200

Skips a failing test with complex ODEs for torch <1.11.0.

Reworks the GitHub CI Action to test against torch versions. Notes specific version compatibility.

[atong01]

Assuming tests pass and @Zymrael approves, would like to push a release 1.0.6 that does not enforce torch<2.0

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (92dd9ba) 64.59% compared to head (2b0de91) 64.59%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #201 +/- ## ======================================= Coverage 64.59% 64.59% ======================================= Files 27 27 Lines 1881 1881 ======================================= Hits 1215 1215 Misses 666 666 ``` | [Files Changed](https://app.codecov.io/gh/DiffEqML/torchdyn/pull/201?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DiffEqML) | Coverage Δ | | |---|---|---| | [torchdyn/\_\_init\_\_.py](https://app.codecov.io/gh/DiffEqML/torchdyn/pull/201?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=DiffEqML#diff-dG9yY2hkeW4vX19pbml0X18ucHk=) | `100.00% <100.00%> (ø)` | |

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[Zymrael]

Looks good, thanks @atong01!

[atong01]

Cool. Will release 1.0.6 with this change.