+ Optional invoice parameters
* Fixed invoicing
*whitespace
Merge remote-tracking branch 'upstream/master'
+ Tasks
Merge pull request #5 from Restocheck/feature/Tasks

+ Tasks
Merge branch 'develop'

Conflicts:
	Deals/Deal.php
	Invoices/InvoiceLine.php
Merge branch 'develop'
Merge branch 'develop'
* Fixed for all status codes