Check versions of installed packages
Refactor has_package test for simpler version matching
Revert "Move strictures before any code (fix #472)"

This reverts commit ec7165ff8cdf1c7b89b0aad8a7b56061997fdde7.

Conflicts:
	lib/Rex/Fork/Task.pm
Use OurPkgVersion for automatic module versioning
Set minimum comment spacing to 1

This helps avoiding perltidy warnings on VERSION strings inserted by
OurPkgVersion.
Ignore side comment length

This helps avoiding unnecessary line breaks where too long side comments
are used.
Use Travis CI for testing