Fixed passing new stack, removed colors from debug output for cleaner…

… diffs.

More fixes and micro-optimizations.

Merge pull request smuuf#2 from superjobru/master

fix some bugs in store functional

Create "next stack" inside rule handlers only if necessary.

+ Some code reformatting.

Some more explicit top-level namespacing and some formatting.

Merge pull request smuuf#1 from superjobru/patch-1

Fix "Quantified nested groups do not work"

Update composer.json

Allow binary to be run from any folder

Rename binary from `cli.php` to `peg`

Fix catastrophic backtracking bug