Merge branch 'release_4.0.0b3' of github.com:fonnesbeck/pymc into release_4.0.0b3

Author: fonnesbeck

RELEASE-NOTES.md

@@ -14,7 +14,6 @@ Instead update the vNext section until 4.0.0 is out.
 We plan to get these working again, but at this point their inner workings have not been refactored.
 - Timeseries distributions (see [#4642](https://github.com/pymc-devs/pymc/issues/4642))
 - Mixture distributions (see [#4781](https://github.com/pymc-devs/pymc/issues/4781))
-- Variational inference submodule (see WIP PR [#4582](https://github.com/pymc-devs/pymc/pull/4582))
 - Elliptical slice sampling (see [#5137](https://github.com/pymc-devs/pymc/issues/5137))
 - `BaseStochasticGradient` (see [#5138](https://github.com/pymc-devs/pymc/issues/5138))
 - `pm.sample_posterior_predictive_w` (see [#4807](https://github.com/pymc-devs/pymc/issues/4807))
@@ -128,8 +127,6 @@ This includes API changes we did not warn about since at least `3.11.0` (2021-01
 - `softmax` and `log_softmax` functions added to `math` module (see [#5279](https://github.com/pymc-devs/pymc/pull/5279)).
 - ...
 
-### Maintenance
-- Variational inference has been ported to v4.
 
 ## Documentation
 - Switched to the [pydata-sphinx-theme](https://pydata-sphinx-theme.readthedocs.io/en/latest/)