* Add supplier parts with non-unity pack_size
* Add a purchase order with new supplier parts
* Exclude unwanted data from dataset
* Futher additions to supplier data
* Fix incorrect supplier part info
* Added some more sales order information
* Added some silicone wire
* Add a supplier of wire
* Add script for generating stock items with purchase price data
* Generate preview images
* Add more stock items with purchase price information
* Script for updating supplier "availability" data
* Add supplier availability data for some parts