Add version_added for all new features (#214)

* Add version_added: 1.0.0 for all new features added before pre-ansible-base.

* Add version_added: 1.0.0 for all new features.

* Next release will be 0.2.0

* Fix error.

* Remove unnecessary warnings.

plugins/modules/database/postgresql/postgresql_idx.py

@@ -88,6 +88,7 @@ options:
     - Only btree currently supports unique indexes.
     type: bool
     default: no
+    version_added: '0.2.0'
   tablespace:
     description:
     - Set a tablespace for the index.
@@ -116,6 +117,7 @@ options:
     - It makes sense to use C(yes) only when SQL injections via the parameters are possible.
     type: bool
     default: yes
+    version_added: '0.2.0'
 
 seealso:
 - module: postgresql_table