v0.3.0

What's Changed

• Balance view: build groups by dragging show bars (#6) by @DeRusto in #8
• Add a Rotation module that owns how slots are formed by @DeRusto in #9
• Move group editing into a groups module by @DeRusto in #10
• Add a Session module shared by the GUI and the text menu by @DeRusto in #11

Full Changelog: v0.2.0...v0.3.0