DOC: Release version 0.15.0

CHANGELOG.md

 # Change log
 
+- `0.15.0`:
+    - [$.formhandler](docs/formhandler.md) now supports client-side validation
+      and sorting by multiple columns. A bug related to encoding special
+      characters is also fixed.
+
 - `0.14.0`:
     - [$.formhandler](docs/formhandler.md) uses a `onhashchange: false` to
       disable changing the URL when elements are selected. This is useful when

package.json

 {
   "name": "g1",
-  "version": "0.14.0",
+  "version": "0.15.0",
   "description": "Gramex 1.x interaction library",
   "license": "MIT",
   "author": "S Anand <s.anand@gramener.com>",