Stay explicitly on Trusty so that Perl 5.18 and below are available

Travis CI recently switched to Xenial, and with that
Perl 5.18, 5.16 and 5.10 build targets are no longer
available.

Unfortunately, even most recent macOS ships with Perl 5.18,
so to keep this build target, we need to stay on Trusty.

Bump up the version number to 1.3

Bumped version to 1.2 for release

Release 1.1

Add explicit word wrapping, remove the cloning instructions