Use HTTPS URLs for installer
Update bash completion library to 0.4.x
Upgrade patch versions of libraries
Fix console output before ProgressHelper::finish

If post-deployment commands were configured, there would be text output
between the end of deployment and the ProgressHelper::finish method being
called (due to the Beam command wrapping too much functionality). This
caused incorrect placement of the "Running post-deployment commands" line
as a line break was missing after the progress bar.

Fixes #47