Release 0.13.0

Feature

• Adds regression line and r-squared calculation to panel scatterplots

Fixes

• Incorrect timestamps on Registry view
• Page crash with error when renaming portfolios
• In the updateArtifact code path, disallow alias changes on artifacts with multiple memberships
• Fix a typo in the workspaces menu
• Scatterplot has r2 stat showing up in two places
• Hide the comment section at the bottom of new report drafts
• Eliminate 'user is already on team' error in team invites
• Re-enable letting shape be a dimension of mark: point in panelplot
• Add create team prompt from create project page