Hot fix of 0.2.1

Hot fix to update documentation which was incorrect in the R/ (but not the man/) folder

Add in functions and documentation

General improvements to 0.2.0, including helper functions and documentation

Inventory management

This release adds in the inventory management model. The Shiny application is still very much in pre release and simulation code is still to be added

Pre-alpha forecasts

Very rough and incomplete version of the application, which does daily and weekly forecasts.