Time integration

Integration with TimeUnit and new Date API (JSR 310).
obs: The new DateApi already has integration with the old Date API (java.util.Date and java.util.Calender).


```java
Quantity<Time> hour = Quantities.getQuantity(1, SI.HOUR);
TimeUnitQuantity hourTimeUnit = TimeUnitQuantity.of(hour);
TimeUnitQuantity day = TimeUnitQuantity.of(DAYS, 1);
Quantity<Time> dayQuantity = day.toQuantity();

LocalDate a = Year.of(2015).atMonth(Month.JANUARY).atDay(9);
LocalDate b = Year.of(2015).atMonth(Month.JANUARY).atDay(10);
Quantity<Time> time = TimeQuantities.of(a, b);//in days


LocalTime a = LocalTime.of(0, 0);
LocalTime b = LocalTime.of(12, 0);
Quantity<Time> time = TimeQuantities.of(a, b);//in hours

LocalDate date = Year.of(2015).atMonth(Month.JANUARY).atDay(9);
Quantity<Time> time = TimeQuantities.of(a, () -> TemporalAdjusters.next(DayOfWeek.SUNDAY));


LocalDate a = Year.of(2015).atMonth(Month.JANUARY).atDay(9);
Quantity<Time> time = TimeQuantities.of(a, () -> TemporalAdjusters.next(DayOfWeek.SUNDAY));


LocalTime a = LocalTime.MIDNIGHT;
TemporalAdjuster temporalAdjuster = (temporal) -> temporal.plus(12L , ChronoUnit.HOURS);
Quantity<Time> time = TimeQuantities.of(a, () -> temporalAdjuster);

```