v3.4.0

New features

• Permanent reconnecting async session (#324)
  This new feature will make it more easy to keep a reference to a session in a class.
  See the new documentation about this
  Note: the backoff dependency had to be added for this feature
• Adding explicit json_serialize argument in AIOHTTPTransport (#337)

Bug fixes

• Allow omitting optional arguments with serialize_variables=True (#338)

Documentation

• DOC Add basic example result in README (#336)