Releasing new version to PyPI

[soichiro-hattori]

Since there have been some changes to the code since the last release on PyPI (and jaxoplanet tutorials require the newer 0.0.3 version), it would be great to release a new version of numpyro-ext.

[dfm]

It has been released! https://pypi.org/project/numpyro-ext/0.0.3/