v1.0.0-rc.8

What's Changed

• arrow to parquet by @Fil in #751
• Small improvements to error handling by @cinxmo in #760
• theme error, displayed when the theme doesn't exist by @Fil in #757
• preview opens in browser unless passed the --no-open option by @Fil in #755
• @media print hides the sidebar and footer by @Fil in #767
• just a log that clarifies that this bundle emanates from the style option by @Fil in #766
• Catch all errors, and only show stacktraces on --debug by @mythmon in #768
• add more specific message for postDeploy 403 and 404 by @mythmon in #771
• add login telemetry by @mythmon in #773
• examples gallery by @mbostock in #772

Full Changelog: v1.0.0-rc.7...v1.0.0-rc.8