v0.4.0

ci/release/changelogs/v0.4.0.md

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+#### Features 🚀
+
+#### Improvements 🧹
+
+- Unconnected nodes and subgraphs are packed more tightly together
+- Containers of similar sizes with indirect connections are aligned better
+- Some diagrams escape local minimas better
+- Nodes connected on both sides are more equidistant to both
+- Cluster edge labels prioritize not intersecting with other cluster edges
+- Node labels reposition to avoid overlapping with icons
+- Node icons reposition to avoid overlapping with fixed labels
+- Multiple edges between nodes are now ordered (left-right and top-down) by the order they were declared
+- Edge routes between grid cells avoid node labels
+- Edge routes consider paths that go through "invisible" nodes and edges (e.g. zero opacity)
+- When only one of `width` or `height` is specified for a container, nodes will full up better to reduce unused space
+- Tree structures are built more symmetrically
+- Containers with edges going into its children are pulled closer together to the other edge endpoint
+- Clusters of nodes are oriented more reasonably to facilitate better routes
+- Clusters routes more often converge on a single point in the middle to form the "fork" aesthetic
+- Node labels are positioned in areas of more space
+- Edge labels avoid fixed node icon positions
+
+#### Bugfixes ⛑️
+
+- Fixes extra warnings that appeared with an invalid token
+- Fixes panic when edges were defined between actors in different sequence diagrams
+- Fixes custom label positions and icon positions not working for nodes in tree structures
+- Disallow edges with different styles (e.g. stroke colors) from sharing routes
+- Some direct straight routes weren't being considered between two non-diagonal nodes