major overhaul of logging functions, provide cleanup upon exit, passing config as parameter
updates to example config
additional check for existing mounts in cleanup() function
reformatting messages in exit_early
fix bug in check_srcs_present. srcpaths list was snipped of by removing from original, further traversing not possible
implement rsync command and add message to exit_success
Fix bugs after testing path in which no config file is supplied
remove unecessary print
cosmetic changes to logging
Fix bug to exit when backup is not due (next_action was modified erroneously)
Add a roadmap to README.md
more cosmetic changes
moving "hardcoded options" to RSYNC_OPTIONS_DEFAULT, add --relative option
more TODOs