revises shadows computation (tree and fish shadows were sometimes not displayed correctly);
'Highest' setting value for shadows is discontinued, however the remaining setting values scale with screen resolution (were fixed in previous versions);
increases fps at expense of increasing cpu usage (for all systems);
fps are by default caped at 30fps, maximum non capped is 60fps as opposed to 40fps of the previous versions (v1.1.2.1 patch adds the option 'Max 30 Fps' to the 'Graphics Settings Menu');
finishes corrections to zoom in/out (it was still snapping near the lower edge of the map, this case was undetected during tests)