Fix symlink issue. See https://drupal.org/node/1372442#comment-6099598
describing new "shallow-copy" option
implementing "shallow-copy" option for git downloads
shallow-clone and working-copy don''t making sense together
Remove dependency on Drupal core's drupal_bootstrap for Drupal 8
Improve Drupal 8 string translation service detection in dt()
Prevent warning in make when --no-core.
Adds the creation time of the extension's .info file to projects. Similar to what update.module does.
Improvements to the update service xml parser to pick also release terms.
Add a drush backend to update_status engine. This backend is independent of update.module.
Fix typos.
UpdateService Project: move project type parsing code to parseXml().
UpdateService Project: isolate direct access to xml object to parseXml().
Extend pm-updatestatus tests. Test Drupal core, and --security-only option.
Enable cache in update_status drush backend.
Merge pull request #934 from jonhattan/update_status-drush

Drush backend for update_status engine
#924: Return an array from drush_invoke_process when executed in interactive mode.
Fix invalidation of update caches in Drupal 8.
Add --check-disabled option to pm-updatestatus.
#899: Improve escaping options for core-exec: allow --escape=0 to disable argument escaping. Suppress shell escaping for shell aliases in the usual case, when arguements are provided as a string.