Remove obsolete change listener structure.
Remove obsolete minification script
Update demos
Optimize Deque push and unshift

Passing arguments as an object to array slice deoptimizes push and
unshift in at least V8 at present. This change rolls that call into a
loop.
Merge changes to Deque into v2
Update future work
Reimplement some and every in terms of iterate

Instead of reduce. Also, fix some bugs in array iteration and improve
test coverage.
Remove support for `any` and `all`.

Use the idioms `some(Boolean)` and `every(Boolean)`.