remove global functions
remove old pie chart labels upon update
fix overzealous jshint cleanup
rebuild with #254
set tests failing for #248 to pending so build will succeed
build for node versions .8, .10, .11 with travis-ci
fix bug null/undefined bug
Merge pull request #263 from NickQiZhu/fix-node-8

fix bug null/undefined bug
set version to 1.6.0-dev
only build on 0.10 on travisci - for now
fix overzealous jshint cleanup

Conflicts:
	dc.js
	dc.min.js
	src/pie-chart.js
Merge remote-tracking branch 'origin/pr/257'

Conflicts:
	dc.min.js
support for elements as anchors
Merge pull request #264 from NickQiZhu/anchor

support for elements as anchors
Update uglify version. Fixes #256
Allow negative values in row chart
update test cases