Make Switch focusable and keyboard handlable, ref #1358

package.json

@@ -58,7 +58,7 @@
     "rc-select": "~6.0.1",
     "rc-slider": "~3.5.1",
     "rc-steps": "~1.5.2",
-    "rc-switch": "~1.3.2",
+    "rc-switch": "~1.4.0",
     "rc-table": "~4.0.0-beta.3",
     "rc-tabs": "~5.8.0",
     "rc-time-picker": "~1.1.0",
@@ -179,4 +179,4 @@
       "path": "./node_modules/cz-conventional-changelog"
     }
   }
-}
+}

style/components/switch.less

@@ -37,6 +37,15 @@
     transition: left @switch-duration @ease-in-out-circ;
   }
 
+  &:focus {
+    box-shadow: 0 0 0 2px tint(@primary-color, 80%);
+    outline: 0;
+  }
+
+  &:focus:hover {
+    box-shadow: none;
+  }
+
   &-small {
     height: 14px;
     line-height: 12px;