Merge pull request #1533 from telefonicaid/task/prepare_3_5_0

 step 3.4.0-next -> 4.0.0

CHANGES_NEXT_RELEASE

@@ -1,18 +0,0 @@
-- Add: payloadType to device and groups model to support NGSI-v2 and NGSI-LD formats in southbound measures (iotagent-json#778)
-- Large refactor of IOTA Lib code to make it simpler
-- Remove: time compression support
-- Remove: autocast (including env var IOTA_AUTOCAST) (#1498)
-- Fix: use but not store timestamp and explicitAttrs from group with autoprovisioned devices (#1504, partially)
-- Fix: MongoDB connection authentication (user and password were not actually used) (#1510)
-- Fix: add static attributes when use explicitAttrs (#1506)
-- Remove: single configuration mode (along with IOTA_SINGLE_MODE env var) (#1469)
-- Remove: extractVariables from jexl plugin (no needed anymore since the removal of bidireational plugin)
-- Fix: ensure service and subservice in context of error handlers using req headers
-- Fix: remove attribute of measures with name `id` or `type` to avoid collisions (#1485)
-- Fix: ensure entity id and type are string (#1476)
-- Fix: update ctxt allow nested expressions (#1493)
-- Fix: change log level contextAvailable expression exception (from WARN to INFO)
-- Fix: null values arithmetics in JEXL expressions (#1440)
-- Fix: remove mongo `DeprecationWarning: current Server Discovery and Monitoring engine is deprecated` by setting `useUnifiedTopology = true`
-- Upgrade mongodb dev dep from 4.17.0 to 4.17.1
-- Fix: mongodb.authSource / IOTA_MONGO_AUTH_SOURCE was not correctly supported (#1526)

package.json

@@ -2,7 +2,7 @@
  "name": "iotagent-node-lib",
  "license": "AGPL-3.0-only",
  "description": "IoT Agent library to interface with NGSI Context Broker",
- "version": "3.4.0-next",
+ "version": "4.0.0",
  "homepage": "https://github.com/telefonicaid/iotagent-node-lib",
  "keywords": [
  "fiware",