This module provides a monotonic() function which returns the value
(in fractional seconds) of a clock which never goes backwards.

On Python 3.3 or newer, monotonic will be an alias of time.monotonic
from the standard library. On older versions, it will fall back
to an equivalent implementation: Linux, BSD	 clock_gettime(3)
Windows		GetTickCount64 OS X    mach_absolute_time

If no suitable implementation exists for the current platform,
attempting to import this module (or to import from it) will cause
a RuntimeError exception to be raised.
