update README about obsolete demo
update dep versions
remove old content; redux for first scene
scaffolding & helpers
keyframes + offset text
cap text offset
consolidate styles
turn off analytics
timeline logic; remove keyframes
auto timeline track length
fix progress bug
typo
remove unused CSS
animation for text offset
anim for fade-to-black outro
improve comments
feature detection
explain timeline-track height
hasten the intro scene fade-out
re-enable analytics