update gh-pages to 66b363d

66b363d air pollution: add new background img
a614817 air pollution: rm mask (which isn’t actually used)
c293a28 air pollution: rm now-extraneous event
Update gh-pages to 50edfc2

50edfc2 air pollution: rm awkward baseHeading property
0adb97d air pollution: rm “lining up” of pollution particles
Update gh-pages to a5d0107

a5d0107 air pollution: subtler pollution trapping
update gh-pages to cf15c8e

cf15c8e air pollution: “sharpen” the trapping effect
update gh-pages to d2b8ae7

d2b8ae7 air pollution: make graph background white
ffef64f air pollution: update colors of pollutants
727f272 air pollution: rm suffix/decimal point from axes
54c4e69 air-pollution: clarify comment re masking
Update gh-pages to 3c96376

3c96376 air pollution: add key (legend) to graph
update gh-pages to 444dad2

444dad2 air pollution: fixup calc of wind stoppage
0c6becd air pollution: WIP on cars
update gh-pages to 9417fb0

9417fb0 air pollution: only non-electric cars should emit
355d99b air pollution: allow multiple cars
226f27b air pollution: widen road
7a92191 air pollution: ++ extent, strength of wind block
update gh-pages to 4b2c3b1

4b2c3b1 air pollution: use new factory image
update gh-pages to 4cb01ed

4cb01ed air pollution: expand on y-label of graph (AQI)
update gh-pages to 23edb27

23edb27 air pollution: fix model-reset bug
66e937e air pollution: adjust for 2-smokestack factories
update gh-pages to 0edf87d

0edf87d air pollution: preserve factories, wind on reset
3e5887c air pollution: make all variants have same size!
23edb27 air pollution: fix model-reset bug
Update gh-pages to 5b4114f

5b4114f air pollution: rm “cap” on top of the model
update gh-pages to ce5507e

ce5507e air pollution: decrease primary -> secondary conv
c6b8f6d air pollution: shrink graph title to fit
update gh-pages to a5cc0a5

a5cc0a5 air pollution: add touch-punch for touch compat.
6ce3699 air pollution: make room for temp key in variant 4