Debian package builder
fix incorrect param for chmod
Update version numbers to fix failing tests
Properly sort WordPress versions

`version_compare()` can return `-1` or `0`, both of which are falsy.
This caused inconsistent results when the WordPress API started
returning versions out of order
Behat test for `wp plugin update --version`.

See #1510.
Behat test for `wp theme update --version`.

See #1510.