anchor.diff:  
   <h4>Note</h4>
   
  -A more comprehensive list of changes for this release can be found <%= link_to_full_changelog 'here.', 'Release 18.4' %>
  +A more comprehensive list of changes for this release can be found <%= link_to_full_changelog 'here.', 'Release 18.6' %>
   
   Have ideas and want to contribute? Need some help getting started? We're here to help. Reach out to us at <%= mail_to 'support@thoughtworks.com' %>.
   
  
positive.code: <h4>Performance fix</h4>
  
  This release primarily addresses performance issue caused by a config save, which slows down several requests because of a long-running database query executed in order to update the dashboard.
  
  We have performed some optimizations in order to significantly reduce the number of SQL calls executed. Read more about it <% link_to_issue 4706, 'here' %> and <%= link_to_issue '4705#issuecomment-386554649', 'here' %>.
  
  <h4>Improvements</h4>
  
    * <%= link_to_issue 4664, 'Improved logging on GoCD server when agent registration fails.' %>
    * <%= link_to_issue 4610, "Add an origin attribute on fetch task. The origin attribute indicates where to fetch the artifact from. For all artifacts fetched from the gocd server, the value is 'gocd'" %>
    * <%= link_to_issue 4630, 'Upgrade jetty to version 9.4.9.' %>
  
  <h4>Bug fixes</h4>
  
    * <%= link_to_issue 4675, 'Server side timestamps are rendered properly when daylight saving is in effect.' %>
    * <%= link_to_issue 4691, "Allow logged in users to access #{link_to_api 'plugin-info', 'PluginInfos API'}." %>
    * <%= link_to_issue 4673, "Allow `null` environment variable value in config repo plugins." %>
    * <%= link_to_issue 3908, "Browse for multiple users and add them in the User summary page." %>
    * <%= link_to_issue 4690, "Fixed some issues with case-insensitive renames of pipeline names." %>
    * <%= link_to_issue 4698, "Do not truncate long pipeline name." %>
    * <%= link_to_issue 4682, "Do not send a HTTP basic authentication challenge for API requests sent by the browser over AJAX." %>
  
  <h4>Bundled plugins</h4>
  
  * Upgraded the bundled LDAP authentication plugin to version 1.0.2. See the [plugin CHANGELOG](https://github.com/gocd/gocd-ldap-authentication-plugin/blob/master/CHANGELOG.md) for more details.
  * Upgraded the bundled file based authentication plugin to version 1.0.2. See the [plugin CHANGELOG](https://github.com/gocd/gocd-filebased-authentication-plugin/blob/master/CHANGELOG.md) for more details.
  
  <h4>Deprecations</h4>
  
  
negative.code:   * The <%= link_to_versioned_api '18.2.0', 'plugin-info', 'Plugin Info API' %> v3 has been deprecated as part of 18.3.0. This version of the API will be removed in a release scheduled for July 2018. Version 4 of the API is available, and users are encouraged to use it.
  
  
  <h4>Contributors</h4>
  
  <%= [
    "Aditya Sood",
    "Akshay Dewan",
  