remove "sag" var, use d3.select()
silo each widget in its own div and svg
add pause buttons to sinewalk
fold color-walk types into ColorWalks
working buttons, properly abstracted colors
size sliders to width of parent div
tweak slider label positions
slider-adaptive-svg-sizing
lots of svg adaptive sizing
add page-level pause button
add mode-specific buttons to sliders
factor velocity into ColorWalk.setPosition
add random sine walk pattern
pull sliders out into own file
move paths to new file
make paths and sliders generic widgets
widget-ize Trail
widget-ize pixel circles
move widgets into widgets/ folder
move walks into walks/ folder