Adds missing super call to EditTabCompleter
Adds missing super call to EditCommand
Fixes the index of an argument during tab completion
Fixes a bug that caused conditions to be lost when a paid sign is changed
Adds an implementation for the edit tab completer
Adds an enum representing a paid sign property
Adds an enum representing a paid sign condition property
Adds aliases to all commands
Adds and option to match any paid sign condition instead of all conditions
Adds checks for whether line indices are outside the allowed range
Disallows any invalid regular expressions in sign conditions
