Version 1.1pre2 released.

• .cookie files are renamed to .pid files, which are compatible with 1.0.x.
• Experimental protocol enhancements that can be enabled with the option ExperimentalProtocol = yes:
  • Ephemeral ECDH key exchange will be used for both the meta protocol and UDP session keys.
  • Key exchanges are signed with ECDSA.
  • ECDSA public keys are automatically exchanged after RSA authentication if nodes do not know each other’s ECDSA public key yet.