don't use mass assignment, assign attribute right away. Remove duplicate code. WS
Merge pull request #44 from rngtng/no_mass_assign_notification_model

No mass asignment within Notification Model Template
make use of respond_to?
Merge pull request #45 from rngtng/notification_template_cleanup2

make use of respond_to?
don't fail on empty input for `redirect_signature_check`
WhiteSpace fix
updated to raise ArgumentError instead, added same for `calculate_signature`
Merge pull request #46 from rngtng/no-fail-on-empty-skin-code

Form#redirect_signature: don't fail on empty input
fixed a typo in parse_elv_details(elv), extended listRecurringDetails tests
Merge pull request #47 from doesterr/master

typo/bug in ListRepsonse#parse_elv_details(elv)
added billing address signature calculation, flatten params to support nested hashes (e.g. for billing_address or custom fields)
Merge pull request #48 from rngtng/add_billing_address

Support for :billing_address and :customfields
Fix typo
Merge pull request #50 from biow0lf/master

Fix typo
Add default_form_params to skin scope. refs #49
strip WS
Merge pull request #52 from rngtng/add-default_form_params-to-skin-cfg

Add default_form_params to skin configuration parameters
allow to configure custom payment system domain
Update .travis.yml
Add 18 and 19 mode for jruby and rbx to Travis configuration.