Switch Sky to pointer events

sky/framework/sky-radio/sky-radio.sky

Index: sky/framework/sky-radio/sky-radio.sky
diff --git a/sky/framework/sky-radio/sky-radio.sky b/sky/framework/sky-radio/sky-radio.sky
index 011f0d3f745593461803f560936b2451bc21aaf7..687dd5dc8fa9d4f9cc0af79a8a2d24509786b0d9 100644
--- a/sky/framework/sky-radio/sky-radio.sky
+++ b/sky/framework/sky-radio/sky-radio.sky
@@ -8,7 +8,7 @@
 <sky-element
     name="sky-radio"
     attributes="selected:boolean, group:string"
-    on-mouseup="handleMouseUp">
+    on-click="handleClick">
 <template>
   <style>
     :host {
@@ -97,7 +97,7 @@ module.exports = class extends SkyButton {
     if (this.selected && this.controller)
       this.controller.takeSelectionFromGroup(this);
   }
-  handleMouseUp() {
+  handleClick() {
     this.selected = true;
   }
 }.register();