Introduces options: run-on-init, mode, and no-clobber-copy. New options are defaulted to maintain backwards compatibility with v1.0.0.

• run-on-init if true will trigger a SFTS2S3 transfer process once at deployment time. Deployment will continue to run according to cron-time-spec if set. To retain v1.0.0 behavior, this option defaults to false.
• mode introduces a cp mode, which will preserve files in SFTS without deleting them after the transfer as v1.0.0 did. To retain v1.0.0 behavior, this option defaults to mv.
• no-clobber introduces a the option to not overwrite files in S3 if files of the same name already exist. Enabled by setting to true. To retain v1.0.0 behavior, this option defaults to flase.