Support multiple invocations of CLI commands from scripts
This release adds support for invoking CLI commands multiple times (e.g. importing multiple secrets from a shell script)
Example:
. encpass.sh
encpass_cmd_import -fop secret1.enc
encpass_cmd_import -fop secret2.enc
It also reduces the number of calls to encpass_checks and addresses an issue (#24) where the shell name (or script name) might contain a hyphen. All preceding hyphens are now stripped from argument 0 that corresponds to the invoking shell or script name.