Apply 5.0 deprecation and renaming to neo4j.time module.

[robsdedude]

This makes the module more robust as it models sub-second precision with ints
instead of floats. This finishes off the work started in PR #551.

Breaking changes:

• Duration
  • The constructor does not accept subseconds anymore.
    Use milliseconds, microseconds, or nanoseconds instead.
  • The property subseconds has been removed.
    Use nanoseconds instead.
  • The property hours_minutes_seconds has been removed.
    Use hours_minutes_seconds_nanoseconds instead.
  • For all math operations holds: they are element-wise on
    (months, days, nanoseconds).
    This affects (i.e., changes) the working of //, %, /, and *.
    • Years are equal to 12 months.
    • Weeks are equal to 7 days.
    • seconds, milliseconds, microseconds, and nanoseconds are
      implicitly converted to nanoseconds or seconds as fit.
  • Multiplication and division allow for floats but will always result in
    integer values (round to nearest even).
• Time
  • The constructor does not accept floats for second anymore.
    Use nanosecond instead.
  • Ticks are now nanoseconds since midnight (int).
    • The property ticks_ns has been renamed to ticks.
      The old ticks is no longer supported.
    • The propertyfrom_ticks_ns has been renamed to from_ticks.
      The old from_ticks is no longer supported.
  • The property second returns an int instead of a float.
    Use nanosecond to get the sub-second information.
  • The property hour_minute_second has been removed.
    Use hour_minute_second_nanosecond instead.
• DateTime
  • The property hour_minute_second has been removed.
    Use hour_minute_second_nanosecond instead.
  • The property second returns an int instead of a float.
    Use nanosecond to get the sub-second information.