Remove old signature class from API
I decided not to remove the SignatureImpl class, as it's not a trivial wrapper around the Bouncy Castle class, but I moved the interface into briar-core and made it package-private.
Closes #763 (closed)
I decided not to remove the SignatureImpl class, as it's not a trivial wrapper around the Bouncy Castle class, but I moved the interface into briar-core and made it package-private.
Closes #763 (closed)