Update documentation

src/config.xml

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
-<operator xmlns="http://wirecloud.conwet.fi.upm.es/ns/macdescription/1" vendor="CoNWeT" name="ngsi-source" version="4.2.0rc2">
+<operator xmlns="http://wirecloud.conwet.fi.upm.es/ns/macdescription/1" vendor="CoNWeT" name="ngsi-source" version="4.2.0">
     <details>
         <title>NGSI source</title>
         <homepage>https://github.com/wirecloud-fiware/ngsi-source</homepage>
@@ -75,13 +75,13 @@
         <preference
             name="ngsi_attributes"
             type="text"
-            label="Requested Attributes"
-            description="A comma separated list of attribute names or the `*` wildcard. Use `*` or an empty value to request all attributes except the builtin ones (`dateCreated`, `dateModified`, ...)."
+            label="Attributes to request"
+            description="A comma separated list of attribute names or the `*` wildcard. Use `*` or an empty value to request all attributes except the builtin ones (`dateCreated`, `dateModified`, ...). This only takes effect when using normalized payloads."
             default="*" />
         <preference
             name="ngsi_metadata"
             type="text"
-            label="Requested Metadata"
+            label="Metadata to request"
             description="A comma separated list of attribute metadata names or the `*` wildcard. Use `*` or an empty value to request all attribute matadata except the builtin ones (`dateCreated`, `dateModified`, ...)."
             default="*" />
         <preference

src/doc/changelog.es.md

@@ -1,4 +1,4 @@
-## v4.2.0 (2021-05-XX)
+## v4.2.0 (2021-05-14)
 
 - Añadido un nuevo endpoint de salida para obtener las entidades usando el
     formato `normalized`.

src/doc/changelog.md

@@ -1,4 +1,4 @@
-## v4.2.0 (2021-05-XX)
+## v4.2.0 (2021-05-14)
 
 - Added a new output endpoint for retrieving entities using the `normalized`
   format.

src/doc/userguide.md

@@ -35,12 +35,13 @@ Settings
   empty, in that case, entities won't be filtered by id.
 - **Query:** Filter entities by providing a query using the Simple Query
   Language.
-- **Requested Attributes:** A comma separated list of attribute names or the `*`
+- **Attributes to request:** A comma separated list of attribute names or the `*`
   wildcard. Use `*` or an empty value to request all attributes except the
   builtin ones (`dateCreated`, `dateModified`, ...).
-- **Requested Metadata:** A comma separated list of attribute metadata names or
+- **Metadata to request:** A comma separated list of attribute metadata names or
   the `*` wildcard. Use `*` or an empty value to request all attribute matadata
-  except the builtin ones (`dateCreated`, `dateModified`, ...).
+  except the builtin ones (`dateCreated`, `dateModified`, ...). This only takes
+  effect when using normalized payloads.
 - **Monitored NGSI Attributes:** Attributes to monitor for updates. Those
   changes are tracked by creating a subscription inside the context broker. If
   this list is empty, that subscription won't be created. Use `*` to subscribe