Actually pr the commit that fixed stairs.
Adds real_coords.begin_*() helpers for forgetful people like me
Merge remote-tracking branch 'origin/master' into i_accidentally_the_coordinate_spaghetti
blargle map.getlocal(point blargle)
Merge pull request #4075 from atomicdryad/i_accidentally_the_coordinate_spaghetti

Actually pr the commit that fixed stairs.