Merge branch 'release'

d3.behavior.js

@@ -141,4 +141,4 @@ d3.behavior.zoom = function() {
 
   return zoom;
 };
-})()
+})();

d3.chart.js

@@ -981,4 +981,4 @@ function d3_chart_qqX(d) {
 function d3_chart_qqY(d) {
   return d.y;
 }
-})()
+})();

d3.csv.js

@@ -89,4 +89,4 @@ function d3_csv_formatValue(text) {
       ? "\"" + text.replace(/\"/g, "\"\"") + "\""
       : text;
 }
-})()
+})();

d3.geo.js

@@ -563,4 +563,4 @@ function d3_geo_boundsPolygon(o, f) {
     f.apply(null, a[i]);
   }
 }
-})()
+})();

d3.geom.js

@@ -825,4 +825,4 @@ function d3_geom_quadtreePoint(p) {
     y: p[1]
   };
 }
-})()
+})();

d3.js

@@ -1,4 +1,4 @@
-(function(){d3 = {version: "1.20.2"}; // semver
+(function(){d3 = {version: "1.20.3"}; // semver
 if (!Date.now) Date.now = function() {
   return +new Date;
 };
@@ -3421,4 +3421,4 @@ d3.svg.symbolTypes = d3.keys(d3_svg_symbols);
 
 var d3_svg_symbolSqrt3 = Math.sqrt(3),
     d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
-})()
+})();

d3.layout.js

@@ -156,14 +156,14 @@ d3.layout.force = function() {
       event = d3.dispatch("tick"),
       size = [1, 1],
       alpha,
-      drag = .9,
+      friction = .9,
       distance = 20,
       charge = -30,
       gravity = .1,
       theta = .8,
       interval,
-      nodes,
-      links,
+      nodes = [],
+      links = [],
       distances;
 
   function repulse(node, kc) {
@@ -246,8 +246,8 @@ d3.layout.force = function() {
         o.x = o.px;
         o.y = o.py;
       } else {
-        o.x -= (o.px - (o.px = o.x)) * drag;
-        o.y -= (o.py - (o.py = o.y)) * drag;
+        o.x -= (o.px - (o.px = o.x)) * friction;
+        o.y -= (o.py - (o.py = o.y)) * friction;
       }
     }
 
@@ -286,9 +286,9 @@ d3.layout.force = function() {
     return force;
   };
 
-  force.drag = function(x) {
-    if (!arguments.length) return drag;
-    drag = x;
+  force.friction = function(x) {
+    if (!arguments.length) return friction;
+    friction = x;
     return force;
   };
 
@@ -1760,4 +1760,4 @@ d3.layout.treemap = function() {
 
   return d3_layout_hierarchyRebind(treemap, hierarchy);
 };
-})()
+})();

d3.time.js

@@ -310,4 +310,4 @@ function d3_time_zone(d) {
       zm = Math.abs(z) % 60;
   return zs + d3_time_zfill2(zh) + d3_time_zfill2(zm);
 }
-})()
+})();

src/core/core.js

@@ -1 +1 @@
-d3 = {version: "1.20.2"}; // semver
+d3 = {version: "1.20.3"}; // semver

src/end.js

@@ -1 +1 @@
-})()
+})();

src/layout/force.js

@@ -4,14 +4,14 @@ d3.layout.force = function() {
       event = d3.dispatch("tick"),
       size = [1, 1],
       alpha,
-      drag = .9,
+      friction = .9,
       distance = 20,
       charge = -30,
       gravity = .1,
       theta = .8,
       interval,
-      nodes,
-      links,
+      nodes = [],
+      links = [],
       distances;
 
   function repulse(node, kc) {
@@ -94,8 +94,8 @@ d3.layout.force = function() {
         o.x = o.px;
         o.y = o.py;
       } else {
-        o.x -= (o.px - (o.px = o.x)) * drag;
-        o.y -= (o.py - (o.py = o.y)) * drag;
+        o.x -= (o.px - (o.px = o.x)) * friction;
+        o.y -= (o.py - (o.py = o.y)) * friction;
       }
     }
 
@@ -134,9 +134,9 @@ d3.layout.force = function() {
     return force;
   };
 
-  force.drag = function(x) {
-    if (!arguments.length) return drag;
-    drag = x;
+  force.friction = function(x) {
+    if (!arguments.length) return friction;
+    friction = x;
     return force;
   };