v2.7.5
- Fix logo not appearing on some servers
- Fix undefined index in order list
- Better design
- Storno invoice
- Compatibility with latest library version

v2.7.4
- Fix button display on OC 2.0
- Add button in order list
- Better handling of date format
- Fix order number manager compatibility

v2.7.3
- Compatibility with some themes on OC 3
- Fix javascript issue caused cannot delete order on order list

v2.7.2
- Fix missing icons on oc 2.0

v2.7.1
- Compatibility with PHP 7.1
- Fix file option not correctly displayed
- Fix footer editor on oc 1.5

v2.7.0
- Compatibility OC 3.x
- Extra compatibility with some themes
- Error with custom fields on some OC versions
- Fix error on mijoshop

v2.6.4
- Fix save issue on OC 2.3

v2.6.3
- OC v2.3 compatibility

v2.6.2
- Fixed language of invoice on OC 2.2

v2.6.1
- Fix error with customer custom fields on OC 2.2

v2.6.0
- Fixes for OC v2.2

v2.5.4
[fix] notice on custom fields OC v2.1
[fix] pdf not attached on order status OC v2

v2.5.3
[fix] bugs on OC 1.5

v2.5.2
[fix] not working filename options

v2.5.1
[fix] adress custom fields OC v2

v2.5
[fix] account custom fields OC v2

v2.4
[feature] Compatibility with opencart v2
[feature] one version to rule them all : only one version of the module for 1.5.x to 2.0.x
[feature] improved attach invoice on status update
[fix] (2.4.1) text_pdf_invoice error
[fix] (2.4.2) fixed error with full locale code (en-US)
[fix] (2.4.3) product options not displayed
[fix] (2.4.6) missing logo on https
[fix] (2.4.7) menu item in admin
[fix] (2.4.8) error on order update on OC 2

v2.2
[feature] chinese, japanese, korean languages support
[feature] dutch and german translation (thanks John)
[fix] language for admin field not saved
[fix] untranslated messages when updating order status
[feature] proforma or invoice display
[fix] (2.2.8) mijoshop language handling
[fix] (2.2.9) date format on mijoshop
[fix] (2.3.0) various bugs on mijoshop

v2.1.6
First release (fork from PDF Invoice Pro)