update version number
start v1.6 dev
Add AUTHORS file

This will be picked up by npm. I used the output of this command:
git log --format='%aN <%aE>' | tail -r | perl -nle 'print $_ unless $a{$_}; $a{$_} //= 1;'
and manually tweaked a few things
Update build; Remove some unused variables
add function wrapper
Merge pull request #268 from NickQiZhu/anon_wrap

Add an authors files that will be picked up by npm. Wrap dc.js in an anonymous function. Remove some unused function params
use strict
add npm status image
Merge pull request #251 from Trilex/master
Merge branch 'master' of github.com:NickQiZhu/dc.js

Conflicts:
	src/core.js
fix #267
fix #259
fix #248
Allow zoom-out to exceed the original domain

.. and allow the caller to control the zoom scale and turn on/off the zoom-out restriction

Reference #176
[#252] add test for symbol placement
Merge remote-tracking branch 'origin/master'

Conflicts:
	dc.min.js
Generate gh-pages branch from master.

Fixes #274
move playground to web
split out stock js from html
update jsdom