0.2.5

What's Changed

• Update notebook by @tlukkezen in #35
• fix(grouper): make sure that pile tip levels are sorted by @RDWimmers in #38
• Fix typing by @RDWimmers in #39
• refactor: Reword GrouperResults.plot docstring by @tlukkezen in #36
• fix(grouper): use design value for grouper negative friction by @RDWimmers in #42

Full Changelog: 0.2.4...0.2.5