AVIF specification v1.0.0 Section 2.2.1. AV1 Item Configuration Property
says:
This property shall be marked as essential.
The "shall" has been relaxed to a "should" in the current draft of the
next version of the AVIF specification:
This property should be marked as essential.
AVIF specification v1.0.0 Section 2.2.1. AV1 Item Configuration Property says: This property shall be marked as essential.
The "shall" has been relaxed to a "should" in the current draft of the next version of the AVIF specification: This property should be marked as essential.
Also bump the version to 0.7.5.