* Updated database schema
* Return invoice "Paid" status when getting invoice information
* Renamed buildInvoice to sendInvoice
* Fixed bug in payments, where gl_accounts table was used instead of payments table

* Minor bugfixes

* Added support for "last" to be used in GL transactions and entries
* Better support and error checking for payments and payment allocations

* Do not allow duplicate supplier references
* Do not allow duplicate payment references

* Fixed up return codes when creating an inventory item

* Do not allow conflicing account references to be created

* Fixed bug in admin interface when creating clients and not supplying createsubacc param
* Added "Ref conflict" return code

* Only check inventory tracked items when a reference is given

* Simplified getting of supplier info some
* Listing of supplier payments added
* Fixed bug in GL module with regards to linking transactions

* Added preliminary support for payments to suppliers

* Engine modules are now more plugin-like
* Preliminary work on Payments module

* Fixed up database schema a bit

* Added TODO to make SMTP more sane

* Finalized two types of addresses, shipping & billing
* Fixed various bugs regarding "Unit"'s
* Return tax reference in purchasing module
* Parse invoice item description
* Don't use database transactions if we don't need to
* Added invoice generation to admin interface

* Fixed discounts to work on supplier and client invoices
* Precision when calculating amounts that have decimals is set to 4
* Various comment fixups
* Fixed database representation of money types
* Quantity is now a number which can have 4 decimal places
* Fixed database transactions vs. AutoCommit, AutoCommit ON achives what we want
* Added "Discountable" hash entry to inventory items returned by Inventory module
* Added function "linkTransactionByRef" to GL module
* Various admin interface changes and fixups

* Updated VAT accounts for south africa
* Added engine module for future use

* Added support for creating sub accounts for clients & suppliers in the relevant journals
* Various bug fixes
* Return more data when returning a GL account

* Revised GL accounts again

* Added contrib directory with books, this will contain sets of books which can be used as templates
* Added backend support for adding GL accounts
* Added support to admin interface to add GL accounts
* Lots of admin interface fixups and changes

* Client invoicing should now work, hopefully its stable enough for use
* Various inventory changes, including cost & sale price tracking for tracked items
* Various purchasing bugfixes & changes
* Admin interface fixes

* Various purchasing & inventory cleanups

* Added support for clients