Source code deleted from the main branch

[JRRudy1]

I noticed that all of the source files (except init.py) were deleted from the main branch in commit 2808a0a... was this intentional? Reverting the deletion would be much appreciated.

[melonora]

see #244

[melonora]

@JRRudy1 New release from the repository on xarray-contrib: https://pypi.org/project/xarray-dataclass/.

The repository is now in the xarray-contrib organization: https://github.com/xarray-contrib/xarray-dataclass