v2.2.1 - Fixed requirements issue

Removed all require_once lines because those resulted in loader issues on ubuntu systems with the backslashes.
These where lines from local testing without composer before.

v2.1.1 - Implemented Sales (Invoicing)

Implemented Sales (Invoicing)

v2.0.2

Fixed wrong value for request (importStatement)

v2.0.1

Merged to Full wrapper instead of just the PettyCash

v1.3.1

Added more common functions. See the Readme file for all the available methods.

v1.2.1

Merge branch 'master' of https://github.com/BertMaurau/yuki-import-pe…