Update dependency to Paymill library v3.0
Remove re-throwing of exception to allow redirect on payment fail
Use Paymill's v3.0 Transaction object instead of array
Adapt Services to new Transaction object for Paymill v3.0

  Services now use the new object.
  No more Paymill_Services....
Adapt tests to Paymill v3.0
Merge pull request #14 from mrzard/paymill-v3.0-integration

Paymill v3.0 integration