The target manager parameters have not been previously been used
as they have been missing the required plumbing. Allow configuration
of the TargetManager via the `device_config` section.
In commit bb282eb19c48b5770186d136e8a40c0573ef59b9 devlibs
`escape_double_quotes` method was retired in favour of the `pipes.quote`
method however this does not format correctly for this purpose therefore
revert back to the original escaping method.
- Add copyright headers to files that did not already have them
- Update the year to the last year the file was modified in files with
existing headers.
Replace the ad-hoc get_plugin() function in the show command (which was
broken for aliases) with a call to pluginloader.get_plugin_class(),
which correctly handles alias resolution.
The show command will try to use pandoc and man to display the relevant
information and will fall back to printing the markdown if pandoc is not
available.
