Version 1.5.0

This release of Kontemplate features two new features contributed by
users:

1. A new template function called gitHEAD has been added to
   Kontemplate. This function inserts the git hash of, you guessed it,
   the HEAD of the git repository containing the template files.
   Thanks to @noqcks for contributing this feature!

2. The kontemplate template subcommand now supports a new flag
   called --output (-o for short) which lets the user determine a
   directory in which templated files should be placed. This feature
   is potentially useful for multi-step templating or use-cases not
   related to Kubernetes at all. Thanks to @salkin for contributing
   this feature!

Release binaries are signed with GPG key 66F505681DB8F43B which is
verified on my Github profile.