SSH+SUDO Controls updates

Added support to specify @group values for the –targets parameter and in the targets file(s)
Added support for nested aliases: up to 5 levels deep instead of just one level
Added --resolve-alias/--alias command-line parameter to manually check the resolution any alias

Fixed propagation of --debug flag (to clients & slaves)
Fixed propagation of --create-dir flag (to clients & slaves)
Fixed problem in --fix-local routine (by adding optional --fix-user command-line parameter and code)
Fixed check when adding key to ssh-agent
Added checking on alias resolution in --check-syntax routine
Better trap setting
Added typeset-ing to vars
Switched version numbering (now date based)
Code cleanup (now error & warning free in shellcheck/perlcritic linters)

See also