Merge pull request #21 from mclois/master

Accept COR1 local instrument code for direct debits
use non-locale-aware sprintf format
Allow 'debtorMandateSignDate' to be DateTime
Merge pull request #22 from tuempeltaucher/master

Locale Issue and debtorMandateSignDate as DateTime
Fixed DOMDocument::createElement(): unterminated entity reference

createElement($name, $value) does not encode the value, replaced
with a TextNode element.
Merge pull request #24 from tuempeltaucher/master

Fixed DOMDocument::createElement(): unterminated entity reference
update stable API version
Requested in #23 the painFormat should be overwritable as the XML seems the same for different PAINFormats. As this is likely not to be, this is just an Idea to solve this temporarily. A better solution would be to build DomBuilder for each PAINFormat but I think this is a pain too.
Code reformatting to a single coding style (Symfony2)
Merge pull request #27 from monofone/master

painFormat should be overwritable
changed handling of transfer amounts as this lead ton an erro #28
Added test for bcmath in case the provided amount is a float
Merge pull request #29 from monofone/master

changed handling of transfer amounts as this lead to an error #28