Dev msrv

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 58.50%. Comparing base (721a54b) to head (3912fc9).

Files	Patch %	Lines
src/lib.rs	50.00%	1 Missing :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #459 +/- ## ========================================== - Coverage 59.93% 58.50% -1.44% ========================================== Files 10 10 Lines 332 335 +3 ========================================== - Hits 199 196 -3 - Misses 133 139 +6 ```

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