add lineplot renderer
Added a LocalTime fixtures to use default timezone. Added an option into Graph.Axis.Time to allow fixture to be specified.
Used JavaScript time to find the "days" ceiling.
Fixed date rollup problem.
Made hover to show local time.
Fixed formatDate and formatTime.
Added the ability to specify a specific x value in the Series.addData method(including test).
Set default `magnitude` on `frequentInterval`
When only one item is in the graph, the `_frequentInterval` function
returns an object without a magnitude, and `barWidth` returns
`NaN` as a result.
Changed readme to include scaled y axis in extension list
Merge branch 'master' of https://github.com/shutterstock/rickshaw
Update Rickshaw.Graph.js

Fixing an apparent bug in this.stackData: when we are toggling between series of different scales the data[index] access at line 149 can hit an array out-of-bounds error if there are inactive series.  Added active() to the call at line 146, to parallel the call at line 130.  This seems to fix the issue.
allows easier injection of time fixtures to axis
Add removeData method to RandomData class, Update extensions example.
Add "make test" target to install prereqs for "npm test" to work.
Autodiscover renderers rather than use hard-coded list.
update built libs
add rockstack configuration file
update to v1.4.0
handle domains for empty data sets; fixes #296
Merge pull request #274 from rojotek/x-series-add-data

Added the ability to specify a specific x value in the Series.addData method