Tests compatible with libass 0.17.3

This can be used to verify basic functionality of a 0.17.3 build.

Tests compatible with libass 0.17.2

This can be used to verify basic functionality of a 0.17.2 build.

Tests compatible with libass 0.17.1

This can be used to verify basic functionality of a 0.17.1 build.

Tests compatible with libass 0.17.0

This corresponds to the tests used at the time of 0.17.0’s release
and can be used to verify basic functionality of 0.17.0.