v0.3.0

Component render functions can now return new return types: an array of nodes, null, undefined. Previously they could only return one node.

Commits:

• Fix actions and update to v4 (#6) 3e4c147
• Add eslint and add lint check action (#4) bd31349
• Improve functionality and improve tests (#5) 0be1888
• Migrate to TypeScript (#3) 809caf9

v0.2.0...v0.3.0