Use 'none' instead of '0' for 'stroke-dasharray'.

Certain browsers have begun interpreting SVG 'stroke-dasharray' with a
value of '0' as *do not render a stroke*. The recommended value is to
use 'none'.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1149516 for Firefox
37.

This also causes invalid 'stroke-dasharray' values to be interpreted as
'none' (which is inline with how the VML is interpreted).

dev/raphael.svg.js

@@ -280,8 +280,6 @@ window.Raphael && window.Raphael.svg && function(R) {
         }
     },
     dasharray = {
-        "": [0],
-        "none": [0],
         "-": [3, 1],
         ".": [1, 1],
         "-.": [3, 1, 1, 1],
@@ -305,6 +303,9 @@ window.Raphael && window.Raphael.svg && function(R) {
             }
             $(o.node, {"stroke-dasharray": dashes.join(",")});
         }
+        else {
+          $(o.node, {"stroke-dasharray": "none"});
+        }
     },
     setFillAndStroke = function (o, params) {
         var node = o.node,
@@ -985,7 +986,7 @@ window.Raphael && window.Raphael.svg && function(R) {
      o ry (number) vertical radius of the ellipse
      o src (string) image URL, only works for @Element.image element
      o stroke (string) stroke colour
-     o stroke-dasharray (string) [“”, “`-`”, “`.`”, “`-.`”, “`-..`”, “`. `”, “`- `”, “`--`”, “`- .`”, “`--.`”, “`--..`”]
+     o stroke-dasharray (string) [“”, “none”, “`-`”, “`.`”, “`-.`”, “`-..`”, “`. `”, “`- `”, “`--`”, “`- .`”, “`--.`”, “`--..`”]
      o stroke-linecap (string) [“`butt`”, “`square`”, “`round`”]
      o stroke-linejoin (string) [“`bevel`”, “`round`”, “`miter`”]
      o stroke-miterlimit (number)

raphael.js

@@ -6095,8 +6095,6 @@
         }
     },
     dasharray = {
-        "": [0],
-        "none": [0],
         "-": [3, 1],
         ".": [1, 1],
         "-.": [3, 1, 1, 1],
@@ -6120,6 +6118,9 @@
             }
             $(o.node, {"stroke-dasharray": dashes.join(",")});
         }
+        else {
+          $(o.node, {"stroke-dasharray": "none"});
+        }
     },
     setFillAndStroke = function (o, params) {
         var node = o.node,
@@ -6800,7 +6801,7 @@
      o ry (number) vertical radius of the ellipse
      o src (string) image URL, only works for @Element.image element
      o stroke (string) stroke colour
-     o stroke-dasharray (string) [“”, “`-`”, “`.`”, “`-.`”, “`-..`”, “`. `”, “`- `”, “`--`”, “`- .`”, “`--.`”, “`--..`”]
+     o stroke-dasharray (string) [“”, “none”, “`-`”, “`.`”, “`-.`”, “`-..`”, “`. `”, “`- `”, “`--`”, “`- .`”, “`--.`”, “`--..`”]
      o stroke-linecap (string) [“`butt`”, “`square`”, “`round`”]
      o stroke-linejoin (string) [“`bevel`”, “`round`”, “`miter`”]
      o stroke-miterlimit (number)