v0.3.0

What's Changed

• Use package extensions instead of Requires by @DanielVandH in #86
• Fix package extensions (#87)
• Clean up tests (#87)
• Remove uses of threadid() (#87)
• Move figures into docs folder (#87)
• Add a better, shorter, PDE example (#87)
• Remove GeneralLazyBufferCache (#87)
• Clean up all examples (#87)

Full Changelog: v0.2.3...v0.3.0