Images are draggable by default, but when used within buttons or as
clickable elements, they should not be draggable because starting a drag
accidentally prevents the click event.

Update react-style-proptype to the latest version 

fix not now to redirect to scratch.mit.edu

Merge pull request #1421 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1518098842-prerelease.1518098861

Update scratch-vm to the latest version 

Lower long and double click timing to 400ms to match scratch 2

Update paint version for bugfixes

Fix the broken box shadow to make inputs pop more on focus

Revert "Remove duplicate computer beeps"

Remove duplicate computer beeps

Update react-modal to the latest version 

Merge pull request #1400 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1517597673-prerelease.1517597689

Update scratch-vm to the latest version 

Merge pull request #1393 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1517513646-prerelease.1517513661

Update scratch-vm to the latest version 

Update sprite, backdrop and extension buttons

Revert "Sprite library now centered"

Use variable type information in variable prompts to show/hide 'more options'

Update scratch-blocks to the latest version 

Monitor should show the list's name

Since we will be adding more interactivity, the active state will
eventually pop the menu open, so I'm not worried about accessibility of
this right now.

Fix feedback iframe scrolling for iOS.

Merge pull request #1382 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1517409350-prerelease.1517409368

Update scratch-vm to the latest version 

Update scratch-paint dependency because greenkeeper does not want to

Fix several safari audio issues