Create base script to rsync non-tiffs
Put variable checking into a method
Perform dry run by default

This will hopefully reduce mistakes when trying to test this script out
Use parameters for copy_files instead of globals
Wrap function calls in main()
Reorder live run and var checking
Make sure destination directory exists
Use cool ":-" syntax for possibly-empty vars
Use getopt for options
Undo params for copy_files

Not reusable code anyway, and the other functions are so tied to globals
that this was just a pain in the end
Use 'oru' directory and add symlink
Add verbosity flag
Fix dry-run messaging
Centralize and verify destination / symlink paths
Fix "destination exists" verbiage
Fix some symlink logic
Add required suffix argument
Add better help
Make output reflect precise bash commands

...not English explanations of what's about to happen
Don't create destination dir on non-live runs