Nested-Pandas v0.2.0

What's Changed

• add SDSS spectra notebook by @dougbrn in #134
• fix for empty query results by @dougbrn in #128
• Bump dawidd6/action-download-artifact from 3 to 6 by @dependabot in #118
• frame-level get and set interface by @dougbrn in #135
• add pack_lists class function by @dougbrn in #136

Full Changelog: v0.1.3...v0.2.0