* main:
  Added published times to changelog
  dedupe pnpm lock file
  use node v20 for tests
  update README
  Improved Squiggle Playground to not show spinner on load when autorun=false
  First go at adding backend-saved autorun and other defaults
  Simple example of hub changing default autorun mode
  Added changeset
  Stop KDE from producing negative numbers
  ⬆️ Bump @codemirror/state from 6.4.0 to 6.4.1
  ⬆️ Bump @storybook/addon-docs from 7.6.12 to 7.6.17

* main: (32 commits)
  configure engine field in package.json files to force Node v20 on Vercel
  use VERCEL_BRANCH_URL instead of VERCEL_URL
  Fixed tests
  Fixes for CR
  fix DefaultAuthStrategy
  update schema.graphql
  Create weak-ghosts-jam.md
  Require namespace for MixedSet.subtract, as it just uses a dict
  Minor cleanup
  Added SquiggleViewer with provider back
  Quick fix
  Made fixes for PR, Specification->Spec, title->name, description->documentation
  refactor specification components
  Refactors to extractSubsetThatSatisfiesThreshold
  Added changeset
  Added simple PointSet test
  Algorithm for overlaps to be more performant
  Added basic mixedSet fr functionality
  PointSetSupport -> MixedSet
  Minor comment cleanup
  ...