* Bidirectional scrolling.
Make horizontalScroll and verticalScroll work together.

* Fix delta variable declaration

Using ?: operator

* Remove notice about vertical and horizontal scroll conflict

There is no sense considering #3162

* Fix redraw order

* Fix error when option is not defined

* Allow template labels

* Add .travis.yml file

* Add experiment travis code

* Fix react example

* Add drop event info

* Fix redraw order

* Fix error when option is not defined

* Allow template labels

* Add .travis.yml file

* Add experiment travis code

* Fix react example

* Add callback functions to moveTo, zoomIn, zoomOut and setWindow

Fix proposal for issue #2842

More details here : #2842

* Fix redraw order

* Fix error when option is not defined

* Allow template labels

* Add .travis.yml file

* Add experiment travis code

* Fix react example

* Add animation options for zoomIn and zoomOut

* Fix groupEditable
* Fix group drag in vertical direction bug
* Fix indentation
* Add initial nestedGroups property
* Fix redraw order
* Get nested groups hiding working
* Add order to nestedGroups
* Fix up example
* Add support for intially closed nested groups
* Add nested groups indentation
* Fix indents
* Add nested groups docs
* Fix example
* Revert indents
* Add classes to nested and nesting group labels and add nesting group css
* Use pure css for nested group icons
* Remove commented off lines and unnecessary btn
* Fix indents
* Add support to showNested:false in group
* Add semicolon
* Remove empty lines

* Add initial support for rolling mode
* Add rollingModeBtn and simplify example
* Make icon in css:
* Remove icon btn
* Add docs
* Fix zoom in rolling mode and initial start/end times

* Add support to fixed times drag and drop
* Fix IE support for drag and drop
* Add support to IE pointer location and data setting/getting

* Fix left/right group alignment
* Add _setDOM and remove scrollbar when there is no scrolling
* Readd calculation of scrollbar width on resize

* Fixes #2273
* Remove console.log
* Fix for zoomable false
* Fix initial scrolling with verticalScroll and fix example

* Add initial experiment
* Register drag and drop events
* Add initial drag and drop support
* Add drag and drop support for all types of objects
* Fix example
* Clean up code and add comments
* Fix example
* remove font awesome
* Fix example style
* Add meta tag to example and add selected when dropped

* Add zoomIn and zoomOut to timeline core functionality
* Fix example
* Fix jsdocs params
* inforce zoom percentage to be between 0 and 1

* Add initial scroller without options
* Add initial scroll without an option
* Add verticalScroll option
* Fix scrollbar positions
* Add docs
* fix example
* remove jquery dependency
* Fix example
* Fix review comments
* Fix verticalScroll and horizontalScroll docs
* Fix bug in timeline option.rtl if otion is undefined
* Remove hack
* Fix breaking of timeline
* Fix scrolling bugs
* Remove silly mistake

* Add initial scroller without options
* Add initial scroll without an option
* Add verticalScroll option
* Fix scrollbar positions
* Add docs
* fix example
* remove jquery dependency
* Fix example
* Fix review comments

* Hide vertically hidden ranged items in groups that are not visible
* Add vertical scroll when zoom is inactive
* Fix review comments
* Add horizontalScroll option

* Hide vertically hidden ranged items in groups that are not visible
* Add vertical scroll when zoom is inactive
* Fix review comments

Moved initial autoscale/fit method to an handler of the "changed" event.

Cleanup of linegraph's event handling
Fixed #1557: Make sure we don't default to scientific notation.
Couple of minor fixes in group counts and ranges.