adding support for v2 API
Notifications now sent as json
added order cancellation object
fixed namespaces and changed env to be enum instead of actual url
changed folders
refactoring to code
added some new server api version2 features (not fully tested yet)
removed some unimplemented code from examples
some more updates to v2
Simplified code to a single model object for order response/notification
Tested the support for V2 of server api
fixed configuration on example to use Riskified Environment instead of url
all urls are now https
changed exception handling to support version 2 (for now - no body in errors)
comments removed