Drush DL getting incorrect versions #59
Description
I don't know if this is due to an recent changes or the release of Drupal 8, but it appears that 'drush dl' commands are working inconsistently between different PHP versions. The obvious reason for that of course is the version of Drush being installed on 5.3 is different to those above.
The issue specifically is when I need to add a test dependency via Drush for a Drupal 7 module, 'drush dl' appears to be getting the Drush 8 release instead of the Drupal 7.
On this, it does look like it's an indicator that the 'drush use' stuff that I implemented previously isn't entirely working correctly, so I will have a look into that as soon as possible.
See the following test log to see the issue in practice: https://travis-ci.org/Decipher/file_aliases/jobs/93308484#L773
A simple workaround is to specify the version of the module in the 'drush dl' command: https://travis-ci.org/Decipher/file_aliases/jobs/93419634#L247