puresign Directory Reference

Files
	accountable.hpp
	Experimental public transcripts for scalar-only accountable signatures.
	accountable_responses.hpp
	accountable_roster.hpp
	bppp.hpp
	Experimental BPPP-backed PureSign proof(R) helpers.
	legacy.hpp
	Legacy Bulletproof-backed Purify-derived BIP340 signing helpers with prepared nonces.