fix draft reference
- for ID tokens with OpenID Connect Token Bound Authentication support, see:
http://openid.net/specs/openid-connect-token-bound-authentication-1_0.html
- for Authorization Codes with OAuth 2.0 Token Binding for Authorization Codes, see:
- https://tools.ietf.org/html/draft-jones-oauth-token-binding
+ https://tools.ietf.org/html/draft-ietf-oauth-token-binding
- refactoring:
- refactor session state, proto state and headers into getters/setters functions
- refactor PKCE support
