4.0.2

This is a minor release that includes a number of minor fixes:

• conglatt: fix ordering issue by @james-d-mitchell in #829
• conglatt: avoid recomputing principal congs by @james-d-mitchell in #832
• semipperm: allow SmallerDegree for other types by @james-d-mitchell in #833
• semipperm: resolve issue 817 by @james-d-mitchell in #834
• Rc v4.0.2 by @james-d-mitchell in #836

Full Changelog: v4.0.1...v4.0.2