Big and incomplete file

lots of writing about stuff planned for the program in the distant
distant future relating to how character scripting works.
It is messy and also not finished, and will soon either become split up
into multiple files, or just better organised with sub headings.
At the moment it serves me more than anyone else trying to make sense of
it.
Large changes

including:
inventory {list<item*>} created;
actions changed to work with inventory system;
character now has a hand to hold products of work (as in HM);

plurality for items is implemented as in HM but may be temporary
depending on how development goes in the future;