Contains the latest versions of the apps to facilitate user update prompts.

examples:

<item>
  <!-- This value is compared to the currently installed version to determine if an update is needed -->
  <sparkle:version>10.0.0</sparkle:version>
  
  <!-- Description shows in "Release Notes" section -->
  <description>This is a critical update.</description>
  
  <!-- Including this section will trigger a blocking, critical update that must be installed in order to keep using the app -->
  <sparkle:tags>
    <sparkle:criticalUpdate></sparkle:criticalUpdate>
  </sparkle:tags>
  
  <!-- This defines where the "Update now" button takes the user -->
  <enclosure url="https://play.google.com/store/apps/details?id=com.chatbooks" sparkle:os="android" />
  <enclosure url="https://next.chatbooks.com" sparkle:os="web" />
</item>

If a new update exists after a critical update, the update will show the data (version number, release notes) from the newest, but will still behave as a critical, blocking update

<item>
  <sparkle:version>10.0.1</sparkle:version>
  <description>Fixed a bug with something.</description>
  <enclosure url="https://play.google.com/store/apps/details?id=com.chatbooks" sparkle:os="android" />
</item>