Fix ISO date parsing on Safari 5.

component.json

 {
   "name": "d3",
-  "version": "3.0.7",
+  "version": "3.0.8",
   "main": "./d3.js"
 }

d3.js

 d3 = function() {
   var π = Math.PI, ε = 1e-6, d3 = {
-    version: "3.0.7"
+    version: "3.0.8"
   }, d3_radians = π / 180, d3_degrees = 180 / π, d3_document = document, d3_window = window;
   function d3_target(d) {
     return d.target;
@@ -7521,7 +7521,7 @@ d3 = function() {
     return format;
   };
   var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
-  d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;
+  d3.time.format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
   function d3_time_formatIsoNative(date) {
     return date.toISOString();
   }

package.json

 {
   "name": "d3",
-  "version": "3.0.7",
+  "version": "3.0.8",
   "description": "A small, free JavaScript library for manipulating documents based on data.",
   "keywords": [
     "dom",

src/core/core.js

 var π = Math.PI,
     ε = 1e-6,
-    d3 = {version: "3.0.7"}, // semver
+    d3 = {version: "3.0.8"}, // semver
     d3_radians = π / 180,
     d3_degrees = 180 / π,
     d3_document = document,

src/time/format-iso.js

 var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
 
-d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;
+d3.time.format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z")
+    ? d3_time_formatIsoNative
+    : d3_time_formatIso;
 
 function d3_time_formatIsoNative(date) {
   return date.toISOString();