v0.12.0: funes push hardening

What's Changed

• doc: cleanup rationale by @dacorvo in #67
• chore: bump version to 0.11.0+dev by @dacorvo in #68
• fix(hub): trap CAS 412 errors by @dacorvo in #69
• fix: O(delta) remote reindex by @dacorvo in #70

Full Changelog: v0.11.0...v0.12.0