v0.6.0

• add Clean mode to deal with large numbers of log files
• add stageOut() Bash helper function
• add option to avoid scram b ProjectRename in case it breaks
• add option to use gfal-copy for non-xrootd endpoints
• remove recursive ssh option (no longer useful after FNAL refactor: https://uscms.org/uscms_at_work/computing/setup/condor_refactor.shtml)
• add and update special settings for FNAL, CMS Connect, UMD
• handle SL7 operating system
• code improvements and bug fixes