v0.1.1

Bugfixes:

• [#28] Temporarily fix Diffie–Hellman key exchange by disabling
  public key validation for Elliptic Curve Diffie–Hellman.
  This code will be revisited later on as it currently represents
  a possible security threat when ECDH is used.
• Fix AES-GCM AEAD encryption.
• Change the default pssht.xml so that it accepts connections
  from the same user as the one starting the server
  (prior to this change, it used an hardcoded username).

Improvements:

• Improve README (installation instruction, changelog).
• Inline the lookup() method in AES-GCM (gives a performance boost on HHVM).