I renamed some functions to conform to the PEP 8 (and have more readable function names). I prefer to do it today instead having to keep ugly names for years :-)
Functions are now:
* enable(file=sys.stderr, all_threads=False)
* disable()
* is_enabled()
* dump_backtrace(file=sys.stderr, all_threads=False)
* dump_backtrace_later(delay, repeat=False, file=sys.stderr, all_threads=False)
* cancel_dump_backtrace_later()
* register(signum, file=sys.stderr, all_threads=False)
* unregister(signum)
* sigbus()
* sigfpe()
* sigill()
* sigsegv()
Refer to the README file for the details.