provide api with default epsilon value when possible

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02% :warning:

Comparison is base (56d8f23) 92.75% compared to head (e72a9af) 92.73%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #55 +/- ## ========================================== - Coverage 92.75% 92.73% -0.02% ========================================== Files 49 49 Lines 51876 51928 +52 ========================================== + Hits 48115 48155 +40 - Misses 3761 3773 +12 ``` | [Files Changed](https://app.codecov.io/gh/sarah-ek/faer-rs/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sarah) | Coverage Δ | | |---|---|---| | [faer-core/src/lib.rs](https://app.codecov.io/gh/sarah-ek/faer-rs/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sarah#diff-ZmFlci1jb3JlL3NyYy9saWIucnM=) | `76.79% <100.00%> (+0.07%)` | :arrow_up: | | [faer-evd/src/lib.rs](https://app.codecov.io/gh/sarah-ek/faer-rs/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sarah#diff-ZmFlci1ldmQvc3JjL2xpYi5ycw==) | `93.70% <100.00%> (+0.20%)` | :arrow_up: | | [faer-svd/src/lib.rs](https://app.codecov.io/gh/sarah-ek/faer-rs/pull/55?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sarah#diff-ZmFlci1zdmQvc3JjL2xpYi5ycw==) | `99.04% <100.00%> (+<0.01%)` | :arrow_up: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/sarah-ek/faer-rs/pull/55/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=sarah)

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