Configuration enhancements. Config file can be set via system property. If an attribute is found in a config file named 'include', the file represented by that value will be loaded into the configuration tree.
Extend Body from Map<String, Any?>, making it easier to work with bodies and other code.
Add Request.data() that converts request parameters to a data object.
Allow logger to be configured by standard configuration scheme.
Http client can now be configured with an error handler.
General improvements to the Facebook authenticator.
Lots of improvements to the examples.