v0.3.0

What's Changed

• update packaging metadata by @bollwyvl in #35
• Clusters/Subgraphs by @samkhal in #55
• fix for head and tail port by @haisland0909 in #34
• Adds edge labels by @antback in #36
• Update NodeFactory.py by @raucha in #43
• Fix shapes not being correctly propagated from SVG by @samkhal in #57

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