[releng] Extension version 0.4.0

extension/package.json

 {
   "name": "@logilab/ld-browser",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "A browser for the web of data.",
   "scripts": {
     "build": "webpack",

extension/src/manifest.json

 {
   "manifest_version": 2,
   "name": "CubicWeb Linked Data Browser",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "A browser for the web of data.",
   "icons": {
     "48": "icons/app.png"

libview/package.json

 {
   "name": "@logilab/libview",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "Library for view specification and definition for a data browser.",
   "scripts": {
     "build": "webpack",

views-logilab/package.json

 {
   "name": "@logilab/views-logilab",
-  "version": "0.3.2",
+  "version": "0.4.0",
   "description": "Experimental implementation of a set of views for the linked-data borwser.",
   "scripts": {
     "build": "webpack",