Updated stacking and gravity tiling
Overhauled stacking code and improved hated autotiling
In case you haven't noticed yet, I rewrote the stacking code of subtle in r2986. It now keeps the windows on their stacking level and raise/lower just modifies the position on that layer.
Read more about stacking here.
And the second probably unoticed change is the addition of a more flexbile way to enable gravity tiling. Instead of just enabling it globally this can be a) done per gravity now and b) either horizontally or vertically.