Release 0.4.4

Added

• Extended the chrono module
  • Added *_full() constructor methods to DurationExt
    • Added Duration::nanoseconds_full()
    • Added Duration::microseconds_full()
  • Added constructor methods to MonthsExt
    • Added Months::months()
    • Added Months::years()

Changed

• Updated DurationExt::MIN_MILLISECONDS for Chrono 0.4.32
• Updated DurationExt::MIN_NANOSECONDS_FULL and MIN_MICROSECONDS_FULL for Chrono 0.4.32
• Updated crate dependencies