* Added initial scripting class in config
* Added exec string
* Added regex matching
* Can now run script and prints if there are any errors
* Export SWAYNC env variables
* Check if non-required fields are null before regexing
* Fixed Scripts to_string method not printing the correct names
* Added config bool to show new notification if script fails
* Added meson option to disable scripting before build
* Added example script into config
* Added scripts object and its properties to JSON schema
* Removed statement that urgency doesn't use regex
* Updated README with scripting info
* Added "script-fail-notify" to README