* Add block drag surface translateSurfaceBy
* Add dragged connection manager
* Add gesture.js
* Add GestureHandler
* Implemented gesture skeleton
* Most basic workspace dragging
* Add dragged connection manager
* cleanup
* doc
* more cleanup
* Add gesture handler
* Add translateSurfaceInternal
* core/block_dragger.js
* cleanup
* Pull in changes to dragged connection manager
* Pull in changes to dragged connection manager
* comments
* more annotations
* Add workspace dragger
* Add coordinate annotations
* Start on block dragging
* Limit number of concurrent gestures
* Add some TODOs
* start using dragged connection manager
* Set origin correctly for dragging blocks
* Connect or delete at the end of a block drag.
* cleanup
* handle field clicks and block + workspace right-clicks
* move code into BlockDragger class, but still reach into Gesture internals a lot
* Clean up block dragger
* Call blockDragger constructor with correct arguments
* Enable block dragging in a mutator workspace
* Add workspace dragger
* click todos
* Drag flyout with background
* more dragging from flyout
* nit
* fix dragging from flyouts
* Remove unused code and rename gestureHandler to gestureDB
* Rename gesture handler
* Added some jsdoc in gesture.js
* Update some docs
* Move some code to block_svg and clean up code
* Lots of coordinate annotations
* Fix block dragging when zoomed.
* Remove built files from branch
* More dragging work (#1026)
-- Drag bubbles while dragging blocks
-- Use bindEventWithChecks to work in touch on Android. Not tested anywhere else yet.
-- Handle dragging blocks while zoomed
-- Handle dragging blocks in mutators
-- Handle right-clicks (I hope)
-- Removed lots of unused code
* More dragging work (#1048)
- Removed gestureDB
- Removing uses of terminateDrag
- Cleaned up disposal code
* Dragging bugfixes (#1058)
- Get rid of flyout.dragMode_ and blockly.dragMode_
- Make drags from the flyout start from the top block in the group
- Block tooltips from being scheduled or shown during gestures
- Don't resize mutator bubbles mid-drag
* Fix events in new dragging (#1060)
* rebuild for testing
* unbuild
* Fix events
* rebuild
* Fix up cursors
* Use language files from develop
* Remove handled TODOS
* attempt to fix IE rerendering bug, and recalculate workspace positions on scroll
* Rebuild all the things
* Comment cleanup; annotations; delete unused variables.
* Change the setting of the CSS transform properties on SVG nodes to set both the unprefixed version and the `-webkit-` prefixed version so that Blockly correctly renders in order browsers, such as Safari < 9 and iOS Safari < 9.2. For discussion of this issue, see https://groups.google.com/forum/#!topic/blockly/o3pERaRQhSg
* Correct the separation between the CSS transform property and the rest of the CSS that was in the variable misleadingly called "transform".
* Add ability to add a class to a scrollbar so that different types of scrollbars can
be distinguished from each other. You used to be able to do this by looking at the parent
element but now all the scrollbars are siblings in the dom.
Also, use this new class to fix#816 so that layering of the flyout and workspace scrollbars
are done correctly.
* Split the scrollbar and flyout out into their own SVG elements. They
are siblings of the workpsace SVG. This paves the way to make performance
improvements to workspace dragging.
from getting selected. Use e.preventDefault instead of adding and removing
classes on mousedown and mouseup. This keeps the browser from having to
potentially recacluate style on mousedown and mouseup events.
