v0.3.0

What's Changed

• docs: usage guide by @hougesen in #16
• feat: implement json to python conversion by @hougesen in #18
• docs: write usage guide for Python by @hougesen in #19
• docs: add notes about flattening of maps by @hougesen in #20
• feat(python): implement optional for arrays by @hougesen in #21

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