prepare minor release 4.0.8.3

gui.js

@@ -72,7 +72,7 @@ isRetinaSupported*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2016-July-17';
+modules.gui = '2016-July-19';
 
 // Declarations
 
@@ -2982,7 +2982,7 @@ IDE_Morph.prototype.aboutSnap = function () {
         module, btn1, btn2, btn3, btn4, licenseBtn, translatorsBtn,
         world = this.world();
 
-    aboutTxt = 'Snap! 4.0.8.2\nBuild Your Own Blocks\n\n'
+    aboutTxt = 'Snap! 4.0.8.3\nBuild Your Own Blocks\n\n'
         + 'Copyright \u24B8 2016 Jens M\u00F6nig and '
         + 'Brian Harvey\n'
         + 'jens@moenig.org, bh@cs.berkeley.edu\n\n'

history.txt

@@ -2971,3 +2971,13 @@ http://snap.berkeley.edu/run#cloud:Username=jens&ProjectName=rotation
 
 == v4.0.8.2 ====
 
+
+160719
+------
+* Morphic: avoid blitting artifacts for non-integer devicePixelRatios in Firefox
+* Widgets: fixed 3D corners for buttons in Firefox for Windows
+* Objects: fixed color collision detection for retina mode
+* Threads: enable broadcasts to be sent to specific sprites (experimental)
+
+== v4.0.8.3 ====
+