Add axis_x_tick_fomat option
Merge branch 'master' of github.com:masayuki0812/c3
Enable custom x
Fix jshint
Update version on bower
Accept NaN as null
Fix version on package.json - #5
Add padding option
Update version
Add axis labels
Fix y label when rotated axis
Fix axis label class
Update script version
'area' and 'area-spline' chart types
Update tooltip position on mouse move
Use 'display' property to control tooltip visibility
Dynamic tooltip position based on chart boundaries
Fix load with custom x - #7
Add destory() as destructor and fix duplicated chart generation - #6
Merge branch 'tooltip' of https://github.com/yojeek/c3 into yojeek-tooltip