dav1d 1.0.0 'Peregrine falcon'

1.0.0 is a major release of dav1d, adding important features and bug fixes.

It notably changes, in an important way, the way threading works, by adding
an automatic thread management. It also continues the relentless work on
optimizations.

1.0.0 is here, it's great, fast and lean. Great job the team \o/

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          *         1.0.0