Implement refunds#create. Closes #116
Double check cards#retrieve. Related to #130
Throw proper error when a card does not exist. Related to #130
Fix id access on setting new default_card
Adds tests to support default_card setup behaviour
Allow creating tokens, stripe connect style
Merge branch 'live-tests' of https://github.com/beNjiox/stripe-ruby-mock into live-tests. Fixes #130
OAuth charge: throw invalid request error
Add support for updating invoices
Merge pull request #127 from nikolai-b/live-tests

Allow specification of default log location
Ensure subscription metata works. Closes #108
Added test for persistence invoice updates
Be Strict: Require a proper card token
Be Strict: Always
Merge pull request #133 from rmm5t/update-invoice

Add support for updating invoices
Refactor assert_existance
Remove credit card requirement when trial_end present - closes #134
Merge pull request #137 from diingo/sub-trial-no-card

Remove credit card requirement when trial_end present - closes #134
Capture charge when amount is specified
Merge pull request #138 from diingo/auth-capture

Capture charge when amount is specified