0.20.0

What's Changed

• Make predictive explorer more flexible (in particular for PyMC and Bambi) by @aloctavodia in #672
• PPE: add alternative family option, remove "method" by @aloctavodia in #673
• Use arviz_stats by @aloctavodia in #675
• improve hdi computation by @aloctavodia in #676
• use trapezoid, update requirements by @aloctavodia in #678
• remove obsolete code by @aloctavodia in #679

Full Changelog: 0.19.0...0.20.0