Toggle speedwalking on and off.   Speedwalking allows you to type multiple
directions not seperated by semicolons, and now it lets you prefix a
direction with a number, to signify how many times to go that direction.
When #toggle speedwalk 2, speedwalk will be in smart option, i.e.,
single nw, ne, sw, se, su, sd, ... will not be interpereted as n;w,
n;e, s;w, s;e   ...
example:
without speedwalk:
s;s;w;w;w;w;w;s;s;s;w;w;w;n;n;w
with speedwalk:
2s5w3s3w2nw
NEW: replaced by #toggle speedwalk, example: #toggle speedwalk 0