Bugfix: Add version key to manifest.json (#34) (#36) * Add version to manifest As required in HA 2021.6, added a version field to manifest.json. * Bump version to 9.2 for new release including the bugfix Co-authored-by: Mark Coombes <mark@markcoombes.ca> Co-authored-by: ahertz <ahertz@rockforest.org>