Explorable Dependency Versioning

[salmenf]

• [ ] On saving an explorable:

  1. Write an importmap with the versions of all widgets used in the explorable (based on installed).
  2. Create bundle based on importmap.

• [ ] On loading an explorable:

  1. Load importmap of explorable if available.
  2. For each import:
  3. If versions match, pass.
  4. If explorable < installed on a minor or patch version, silently upgrade explorable.
  5. If versions don't match: Let user choose between keeping both, aligning installed, or aligning explorable. Warn if aligning a major version mismatch.

• [ ] Also add a form in the metadata editor to change versions.