v1.4.1
- Remove overlay on journal 3 quick checkout in case of mandatory po number is empty

v1.4.0
- Possibility to create and edit PO number from admin
- Fix adding PO number with & char was failing

v1.3.2
- Comptibility with PO in all payment method with journal 3

v1.3.1
- Fix asterisk to indicate for required PO number was displayed even when optionnal

v1.3.0
- Possibility to set PO number in all payment methods
- Fix undefined index: order_id
- Fix paypal issue

v1.2.6
- New option to select specific customers to display the pay by invoice method

v1.2.5
- New option to select include PO number in comment or not
- PO number can be accessed from custom modules

v1.2.4
- PO number is now saved in dedicated field
- Possibility to search in orders the by PO number (using regular order number search)
Important: go at least once in module options after this update

v1.2.3
- Fix error on checkout with some themes on OC 3

v1.2.2
- Fix settings not saved over HTTPS
- Fix redirect issue on OC 3

v1.2.1
- Fix error on load model/payment
- Fix double entry in module list
- Minor fixes

v1.2.0
- Compatibility with OC 3.x

v1.1.2
- Fix edit order bug on OC 2.1

v1.1.1
- Added guest group selector

v1.1.0
- Purchase order function

v1.0.3
- Fix checkout on some opencart versions

v1.0.2
- Fix error on payment on OC v2.2

v1.0.1
- Fix duplicate language displayed in admin

v1.0.0
- Initial release