Revamp of Trello board

[mdgunn]

I hope you don't mind but I have started to refresh the Trello board (https://trello.com/b/RsYy7AbK/forth) so it can be of some use on tracking things to an initial release.

I will continue to refine a bit more. The main aim is to make it a bit cleaner and simpler to see what work is proposed for the first release, what is in progress or done, and what we are not planning to tackle yet (PROPOSED) .  

I would suggest we keep cards fairly broad in subject (e.g. enemy AI) and use a checklist called tasks in each card and keep the number of cards smaller rather than lots of small cards that may be on similar thing.   One problem with this proposed way is that with only a few cards and task lists it may be less clear who is working on what, especially if we are working on what.   The best way around this might be that we try to focus on different areas of work, or alternatively a check list item can be popped out to an individual task when underway.

There are MANY MANY ways to do Trello and I vary sometimes myself but if you agree maybe this will keep it clearer what is outstanding and what is left to do from the checklist items.  

I have archived a number of items which are fairly old now in favour of having a board more reflective of current intended work.