v0.2.1

What's Changed

• add graphviz to docs by @pz-max in #719
• Avoid dropping generators with empty time series when clips equal zero by @davide-f in #714
• Fix an error in simplify_network when to_substations simplification flag is on by @ekatef in #708
• Update how_to_docs as per recent changes by @asolavi in #720
• adapt #714 to avoid hydro mismatch by @cschau-ieg in #721
• implement license change by @pz-max in #733
• fix hardcoded 380kv by @yerbol-akhmetov in #732
• add license consent to PR template by @pz-max in #737
• Release v0.2.1 by @pz-max in #738

Full Changelog: v0.2.0...v0.2.1