Remove final "experimental" status from tor-hscrypto and tor-error.
This branch makes our usage of tor-error non-experimental everywhere, and removes the final TODO HS
from tor-hscrypto
and tor-error
.
Needs review from @gabi and @Diziet to establish:
- Are we okay declaring the
define_asref_dyn_std_error!
macro non-experimental? - Are we okay delcaring the APIs of tor-hscrypto non-experimental?
(In this context, "non-experimental" means "covered by semver and not about to change precipitously".)