release pvlink 0.3.0

js/package.json

 {
   "name": "pvlink",
-  "version": "0.2.4",
+  "version": "0.3.0",
   "description": "ParaView-Web RemoteRenderer in Jupyter",
   "keywords": [
     "jupyter",

pvlink/_version.py

 # Module version
-version_info = (0, 2, 4, 'alpha', 0)
+version_info = (0, 3, 0, 'final', 0)
 
 # Module version stage suffix map
 _specifier_ = {'alpha': 'a', 'beta': 'b', 'candidate': 'rc', 'final': ''}