Plotly

Fixed
- Fix `displayModeBar` plot config logic [57]
- Fix length-1 bins count as ascending in `Lib.findBin` [47]
- Fix jasmine test runner on windows [46]

Added
- Add three plot config options: `modeBarButtonsToRemove`,
`modeBarButtonsToAdd` and `modeBarButtons` which combine
to add the ability to remove specific mode bar buttons add
custom mode bar buttons and fully customize the mode bar.

Fixed
- Fix installation from npm3 [12]
- Fix UMD in plotly.js dist files [18]
- Fix for blank elements in a text array [31]

First fully open source release.

Added
- Add 2D WebGL plot engine

Changed
- Save to cloud is now done via a modebar button by default,
the `'Edit chart'` link is still available through the
`'showLink'` plot config.
- Better double-click notifier CSS

Fixed
- Fix `Plotly.newPlot` 3D and geo bug.
- Fix `plotly_click` event bug in latest Chrome and Firefox.

Known limitations
- Different plot types cannot be mixed in subplots.
- 2D WebGL has no image test support.
- Click and hover events are not hooked for gl3d, geo and gl2d
plot types.
- Polar chart are under-developed.