There's a cleaner way to do this, commit to module formatter pending.

Revert "No longer need to reference 'version_added' in docs for these, as this was quite a while ago."

This reverts commit ff0a41d446.

library/cloud/virt

@@ -21,7 +21,7 @@ module: virt
 short_description: Manages virtual machines supported by libvirt
 description:
      - Manages virtual machines supported by I(libvirt).
-version_added: historical
+version_added: "0.2"
 options:
   name:
     description:

library/commands/command

@@ -56,6 +56,7 @@ options:
   chdir:
     description:
       - cd into this directory before running the command
+    version_added: "0.6"
     required: false
     default: null
   executable:

library/commands/shell

@@ -10,7 +10,7 @@ description:
      - The shell module takes the command name followed by a list of arguments,
        space delimited. It is almost exactly like the M(command) module but runs
        the command through a shell (C(/bin/sh)) on the remote node.
-version_added: historical
+version_added: "0.2"
 options:
   (free form):
     description:

library/database/mysql_db

@@ -25,7 +25,7 @@ module: mysql_db
 short_description: Add or remove MySQL databases from a remote host.
 description:
    - Add or remove MySQL databases from a remote host.
-version_added: historical
+version_added: "0.6"
 options:
   name:
     description:

library/database/mysql_user

@@ -24,7 +24,7 @@ module: mysql_user
 short_description: Adds or removes a user from a MySQL database.
 description:
    - Adds or removes a user from a MySQL database.
-version_added: historical
+version_added: "0.6"
 options:
   name:
     description:

library/database/postgresql_db

@@ -22,7 +22,7 @@ module: postgresql_db
 short_description: Add or remove PostgreSQL databases from a remote host.
 description:
    - Add or remove PostgreSQL databases from a remote host.
-version_added: historical
+version_added: "0.6"
 options:
   name:
     description:

library/database/postgresql_user

@@ -34,7 +34,7 @@ description:
      the module to try to remove the user, but if not possible keep going; the
      module will report if changes happened and separately if the user was
      removed or not.
-version_added: historical
+version_added: "0.6"
 options:
   name:
     description:

library/files/assemble

@@ -36,7 +36,7 @@ description:
        local or have already been transferred to the system, and concatenate them
        together to produce a destination file. Files are assembled in string sorting order.
        Puppet calls this idea I(fragments).
-version_added: historical
+version_added: "0.5"
 options:
   src:
     description:

library/files/fetch

@@ -10,7 +10,7 @@ description:
        organized by hostname. Note that this module is written to transfer
        log files that might not be present, so a missing remote file won't
        be an error unless fail_on_missing is set to 'yes'.
-version_added: historical
+version_added: "0.2"
 options:
   src:
     description:

library/internal/async_status

@@ -25,7 +25,7 @@ module: async_status
 short_description: Obtain status of asynchronous task
 description:
      - "This module gets the status of an asynchronous task."
-version_added: historical
+version_added: "0.5"
 options:
   jid:
     description:

library/network/get_url

@@ -38,7 +38,7 @@ description:
        (see `setting the environment
        <http://www.ansibleworks.com/docs/playbooks_environment.html#setting-the-environment-and-working-with-proxies>`_),
        or by using the use_proxy option.
-version_added: historical
+version_added: "0.6"
 options:
   url:
     description:

library/packaging/apt

@@ -25,7 +25,7 @@ module: apt
 short_description: Manages apt-packages
 description:
   - Manages I(apt) packages (such as for Debian/Ubuntu).
-version_added: historical
+version_added: "0.0.2"
 options:
   pkg:
     description:

library/packaging/yum

@@ -74,6 +74,7 @@ options:
     description:
       - The remote yum configuration file to use for the transaction.
     required: false
+    version_added: "0.6"
     default: null
     aliases: []
 

library/system/authorized_key

@@ -27,7 +27,7 @@ module: authorized_key
 short_description: Adds or removes an SSH authorized key
 description:
      - Adds or removes an SSH authorized key for a user from a remote host.
-version_added: historical
+version_added: "0.5"
 options:
   user:
     description:

library/system/facter

@@ -28,7 +28,7 @@ description:
      - Runs the I(facter) discovery program
        (U(https://github.com/puppetlabs/facter)) on the remote system, returning
        JSON data that can be useful for inventory purposes.
-version_added: historical
+version_added: "0.2"
 options: {}
 notes: []
 requirements: [ "facter", "ruby-json" ]

library/system/group

@@ -22,7 +22,7 @@ DOCUMENTATION = '''
 ---
 module: group
 author: Stephen Fromm
-version_added: historical
+version_added: "0.0.2"
 short_description: Add or remove groups
 requirements: [ groupadd, groupdel, groupmod ]
 description:

library/system/mount

@@ -26,7 +26,7 @@ module: mount
 short_description: Control active and configured mount points
 description:
      - This module controls active and configured mount points in C(/etc/fstab).
-version_added: historical
+version_added: "0.6"
 options:
   name:
     description:

library/system/ohai

@@ -28,7 +28,7 @@ description:
        (U(http://wiki.opscode.com/display/chef/Ohai)) on the remote host and 
        returns JSON inventory data.
        I(Ohai) data is a bit more verbose and nested than I(facter).
-version_added: historical
+version_added: "0.6"
 options: {}
 notes: []
 requirements: [ "ohai" ]

library/system/user

@@ -22,7 +22,7 @@ DOCUMENTATION = '''
 ---
 module: user
 author: Stephen Fromm
-version_added: historical
+version_added: "0.2"
 short_description: Manage user accounts
 requirements: [ useradd, userdel, usermod ]
 description: