Revert "Remove Elm Reactor link until tomorrow"

This reverts commit dfab123398c86e0cdeb0dc8afd94e1b63162d690.
Add note about "narrated by Evan" for videos
Add links to Mario and Stamps in the debugger
Switch to flashier title
Get rid of hyphens in "time travel"
Move example higher
Revert "Move example higher"

This reverts commit 2f999f21e12635c713130856dc0d4eced390db11.
Put stamps example up top
Revert "Put stamps example up top"

This reverts commit 43b823118cffc0399414fce3db489ff7ac11ff12.
Try a new intro paragraph
Update some links on the FAQ
Remove inaccessible and stale page
Add dream writer as example and improve some wording
Merge branch 'stable'