Progress on hash-based singature libraries and possible future paths (depending on dhf-proposal support)

This is a cross post of @pibara/progress-on-hash-based-singature-libraries-and-possible-future-paths-depending-on-dhf-proposal-support by Hive account@pibara.

Some progress info. Hoping the proposal will get to 100% required suport within 3 weeks, or scaling down project and deleting proposal.