Xarray-einstats

The changelog for the 0.7.0 release is available at the [xarray-einstats documentation](https://xarray-einstats.readthedocs.io/en/v0.7.0/changelog.html).

This release adds support for any hashable as dimension name in linalg and einops modules, dimensions are no longer restricted to be strings and any dimension name valid for xarray should also be compatible here.

The changelog for the 0.6.0 release is available at the [xarray-einstats documentation](https://xarray-einstats.readthedocs.io/en/v0.6.0/changelog.html).

This release adds accessors as an alternative way to interface some of the functions in the einops and linalg module.

Patch for the 0.5 release in order to include the correct xarray version constraints. See the [changelog on the website](https://einstats.python.arviz.org/en/v0.5.1/changelog.html).

The changelog for the 0.5.0 release is available at the [xarray-einstats documentation](https://xarray-einstats.readthedocs.io/en/v0.5.0/changelog.html).

It is a release that adds multiple new functions to the library such as `logsumexp`, `sort` or `ecdf` as well as multiple bug fixes and increased and improved testing. A new tutorial page on linalg was also added.

The changelog for the 0.4.0 release is available at the [xarray-einstats documentation](https://xarray-einstats.readthedocs.io/en/v0.4.0/changelog.html).

The highlights of the 0.4.0 release are the addition of the [multivatiate_normal distribution](https://einstats.python.arviz.org/en/v0.4.0/api/generated/xarray_einstats.stats.multivariate_normal.html) and the new [getting started page](https://einstats.python.arviz.org/en/v0.4.0/getting_started.html) in the docs.

The changelog for the 0.3.0 release is available at the [xarray-einstats documentation](https://xarray-einstats.readthedocs.io/en/v0.3.0/changelog.html). The main change is the update of the requirements to follow [NEP 29](https://numpy.org/neps/nep-0029-deprecation_policy.html)