Released

• igraph 0.9.5, Nov 2021 https://github.com/igraph/igraph/releases
• python_igraph (PyPI package now just called igraph), https://github.com/igraph/python-igraph/blob/master/CHANGELOG.md

We also move the igraph feature to sage.features.igraph.

The previous update was in #30899.

Depends on #32174

CC: @mkoeppe @dimpase @kiwifb @slel

Component: packages: optional

Author: Matthias Koeppe

Branch: 946ebed

Reviewer: David Coudert

Issue created by migration from https://trac.sagemath.org/ticket/32510