* Split PrimaryPreDigest and SecondaryPreDigest * Update client/consensus/babe/src/lib.rs Co-Authored-By: André Silva <andre.beat@gmail.com> * Update primitives/consensus/babe/src/digests.rs Co-Authored-By: André Silva <andre.beat@gmail.com> * Update primitives/consensus/babe/src/digests.rs Co-Authored-By: André Silva <andre.beat@gmail.com> * Update primitives/consensus/babe/src/digests.rs Co-Authored-By: André Silva <andre.beat@gmail.com> Co-authored-by: André Silva <andre.beat@gmail.com>