<p><!-- Release notes generated using configuration in .github/release.yml at main --></p>
<h2>What's Changed</h2>
<h3>New Features </h3>
<ul>
<li>Allow batched parameters in MvNormal and MvStudentT distributions by @ricardoV94 in https://github.com/pymc-devs/pymc/pull/6897</li>
<li>Logprob derivation of Max for Discrete IID distributions by @Dhruvanshu-Joshi in https://github.com/pymc-devs/pymc/pull/6790</li>
<li>Support logp derivation of <code>power(base, rv)</code> by @LukeLB in https://github.com/pymc-devs/pymc/pull/6962</li>
</ul>
<h3>Bugfixes </h3>
<ul>
<li>Make <code>Model.str_repr</code> robust to variables without monkey-patch by @ricardoV94 in https://github.com/pymc-devs/pymc/pull/6942</li>
<li>Fix bug in GP Periodic and WrappedPeriodic kernel full method by @lucianopaz in https://github.com/pymc-devs/pymc/pull/6952</li>
<li>Fix rejection-based truncation of scalar variables by @ricardoV94 in https://github.com/pymc-devs/pymc/pull/6923</li>
</ul>
<h3>Documentation </h3>
<ul>
<li>Add expression for NegativeBinomial variance by @ricardoV94 in https://github.com/pymc-devs/pymc/pull/6957</li>
</ul>
<h3>Maintenance </h3>
<ul>
<li>Add constant and observed data to nutpie idata by @Y0dler in https://github.com/pymc-devs/pymc/pull/6943</li>
<li>Improve multinomial moment by @aerubanov in https://github.com/pymc-devs/pymc/pull/6933</li>
<li>Fix HurdleLogNormal Docstring by @amcadie in https://github.com/pymc-devs/pymc/pull/6958</li>
<li>Use numpy testing utilities instead of custom close_to* by @erik-werner in https://github.com/pymc-devs/pymc/pull/6961</li>
<li>Include more PyTensor functions in math module by @jaharvey8 in https://github.com/pymc-devs/pymc/pull/6956</li>
<li>Improve blackjax sampling integration by @junpenglao in https://github.com/pymc-devs/pymc/pull/6963</li>
</ul>
<h2>New Contributors</h2>
<ul>
<li>@Y0dler made their first contribution in https://github.com/pymc-devs/pymc/pull/6943</li>
<li>@amcadie made their first contribution in https://github.com/pymc-devs/pymc/pull/6958</li>
<li>@erik-werner made their first contribution in https://github.com/pymc-devs/pymc/pull/6961</li>
</ul>
<p><strong>Full Changelog</strong>: https://github.com/pymc-devs/pymc/compare/v5.9.0...v5.9.1</p>