Improved weeder.toml
Since Weeder can't deal with TH, we make a guess about what symbols TH depends on, based on whether they contain underscores and whether they're in a module named `TH` Also, we're now properly using using regular expressions.
Since Weeder can't deal with TH, we make a guess about what symbols TH depends on, based on whether they contain underscores and whether they're in a module named `TH` Also, we're now properly using using regular expressions.