Bumped version number to 3.7.1-SNAPSHOT
Fixed onAdd/onUpdate callbacks not working when using DataView in Timeline
Merge pull request #444 from motzel/develop

Fixed onAdd/onUpdate callbacks not working when using DataView in Timeline
Updated history
Implemented selection of a range of items using Shift+Click
Updated /dist/
added alignZeros
- dragEnd event now does not give the selected nodes if only the viewport has been dragged #453
Fixed #459: content in range items may overflow range after zoom
Added loop protetion for Timeline redrawing (see #450)
Add support for High Resolution displays
Add a newline to the minified vis.min.js file to prevent issues when concatenating downstream (see #447)
Fixed #448: added some styles to prevent conflicts with bootstrap css styles
fixed typo #467, removed old, unused options from network
removed setData from the Graph2d docs
fixed reference to dataset at bar styles.
merged pull request #464
updated builds, history
made pixelRatio a property, not an option
Fixed #461: configuring either `start` or `end`