Monotonic Time Backport

This library provides a backport of Python's `time.monotonic()` function for older Python environments (Python 2 and Python < 3.3). It offers a monotonic clock, guaranteed not to go backward, which is crucial for reliably measuring elapsed time, as it remains unaffected by system clock adjustments such as daylight saving changes. The current version is 1.6. The library is considered stable and complete, with no further updates planned, as `time.monotonic()` is integrated into the standard library for Python 3.3 and newer.