Release 2.0.4

* 111: Update project metadata.

Release 2.0.3

* 103: Configure linting with `ruff`.

Release 2.0.2

* 101: Bump `numpy` version.

Release 2.0.1

* 99: Replace `tox` functionality with `hatch`.

Release 2.0.0

* 88: Add developer notes.
* 85: Fix error in documentation.
* 82: Update documentation.
* 79: Integrate repo with ReadTheDocs.
* 77: Refactor `SQSolarcell` and `DeVosSolarcell` classes.
* 68: Refactor `uibei` to be a method on a new `BEI` class.
* 59: Update documentation.
* 58: Cosmetic documentation edits.
* 56: Update Python dependency to 3.10.
* 53: Automatically post artifacts to testing PyPI.
* 52: Automatically create releases from version tags.
* 51: Write GitHub action to automatically run tests.
* 50: Leverage `tox` to run tests.
* 49: Refactor tests to use `pytest`.
* 48: Replace `conda` with `hatch`.
* 44: Add method to compute lower Bose-Einstein integral.
* 43: Add method to compute full Bose-Einstein integral.
* 39: Update for basic compatibility with Python 3.
* 28: Specify how to cite `ibei`.

Release 2.0.0.dev0

39: Update for basic compatibility with Python 3.

Properly package and distribute using conda

The prior version of `ibei`, which was [hosted on
pypi](https://pypi.python.org/pypi/ibei/), directly included the
[`physicalproperty`](https://github.com/jrsmith3/physicalproperty)
code in its codebase. The `physicalproperty` code has been removed
from this release in favor of an `import`.

`ibei` is now available on binstar via conda install since it depends
on `numpy`. New versions will only be distributed on binstar and not
pypi due to difficulties installing `numpy`.

The online documentation has moved to
[ReadTheDocs](http://ibei.rtfd.org) and is no longer hosted with
github pages. The documentation has also been edited for clarity.

This package now uses [Travis-CI](https://travis-ci.org/jrsmith3/ibei)
for continuous integration testing.

Prepare package for distribution on pypi

Split/merge PhysicalProperty into its own repo

Backend modifications

In order to merge this repo more easily into, e.g., the tec repo, I
split up the classes into their own files. These changes don't affect
the API so they are just going to be pushed as a patch release.