* cleaning spaces and consistent formatting
* removed more subshells
* progress bar cleanup
* moved uservars to a .config file
* rewritten options from yes/no to true/false
* initialized default variables
* added bash options: -euo pipefail, shopt -s nullglob and failglob
* quoting variables, cleaning syntax, logic and order
* unquoted some variables due to breakage
* added exit on pull-fail
* added new sponsor
* added Slack template
