Provide latest version for older Ubuntu releases

[Beanow]

While the new password-store releases also include features. I think for the sake of including the security fixes / improvements the latest version should be released on older Ubuntu versions.

For example:
  1.5 has commit signing to prevent tampering, strong wiping of temporary files, disabled GPG compression.
  1.6.x has "sneaky paths" checking, some re-encryption escaping bug fixes.

And they arguably improve the overall security.
Since the upstream repository does not provide any security fixes only branch, I think it's best to go with the current version.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Robert Sander (gurubert)]

Debian jessie contains version 1.6.3 of pass.

This version has important features like being able to encrypt with multiple GPG ids that are missing from 1.4