Redo !970, now without a stray "b" in the middle of everything.

See merge request spnati/spnati.gitlab.io!1084

(cherry picked from commit 3cb10e960f4d8422c463d32970475e3f3312301f)

84c9d5c9 Implement the direction attribute of <state> and add bottom-right and…
380686f6 Make make_xml.py recognize "direction".
1437bdcf Merge remote-tracking branch 'origin/master' into bubble-directions
36e87d8c Instead of the limited "down-left" and "down-right" directions, implement a…