#2 Immediately write out game changes where possible

[Paul Gilbert]

One problem with the editor currently is that to see any
changes you currently need to explicitly quit the editor
before starting Nuvie or the original interpreter.

Change the editor so that, presuming a particular file
doesn't take too to write out when an entry changes,
any changes should immediately be written out. The
files should also not be kept exclusively open so that
changes in the editor can be seen immediately in the
game.

Alternatively, have a button that would flush out any
changes so a user can simply click it and then
immediately start up the game without having to exit
the editor