Add dummy provider with 3D Secure support
Clean up unused imports
Add tests for Dummy3DSecureProvider
Bump version to 0.6.2
Remove usunsed exception handler
Add PaymentError test method in Dummy3DSecureProvider
Fix python 3 compatibility
Fix compatibility with python 3.2
Merge pull request #50 from artursmet/dummy-3ds-provider

Dummy 3D Secure provider