Fixes issues with theme changes not generating files on win platform

RELEASE-NOTES.md

@@ -16,6 +16,7 @@
 - **Modal** - Increased `close` specificity, modal will now only close on `> .close` #2736
 
 **Additional Bugs**
+- **Build Tools** - Fixes issue on `win` platform where packaged theme would not correctly update when using watch due to regExp not matching windows path separators.
 - **Form Validation** - Fixed issue with `get value(s)` where unchecked checkboxes would not correctly retrieve values
 - **Grid / Container ** - `ui relaxed grid container` and `ui very relaxed grid container` will now all render at same container width
 - **Input** - `labeled input` now keeps border on label edge so that focus color appears correctly

tasks/config/tasks.js

@@ -58,7 +58,7 @@ module.exports = {
       }
     },
 
-    theme: /.*\/themes\/.*?(?=\/)/mg
+    theme: /.*(\/|\\)themes(\/|\\).*?(?=(\/|\\))/mg
 
   },