Merge pull request #34 from f0uriest/rc/hotfix

Revert "Merge pull request #29 from f0uriest/rc/periodic"

Merge pull request #29 from f0uriest/rc/periodic

Fix periodic transformation to avoid dx==0

Update requirements.txt

Merge pull request #25 from f0uriest/rc/scipy

Add ``scipy.interpolate`` API

Merge pull request #13 from f0uriest/rc/vector_valued

Fixes for interpolating vector valued functions

Merge pull request #10 from f0uriest/rc/typing

Add type annotations

Add approx_df to public API

Update pypi release action

Update CHANGELOG.md