Replace New dialog box with separate tools for resizing maps and
replacing terrain textures, to provide more power and to simplify the
problem of initialising map settings.
Fix engine to cope with dynamic map resizing.
Add JSON support to AtObj, to let C++ interact with JSON more easily.
This was SVN commit r9566.
Fix particles in Actor Viewer.
Expand terrain in Actor Viewer.
Change background to black so it blends with the LOS texture more
nicely.
This was SVN commit r9172.
Change lighting model for new maps to allow better overbrightness.
Cache player colours instead of loading from scripts every time the
renderer wants them.
This was SVN commit r9123.
