Merge pull request #1 from jpgough/master

Additional conversion to JDK 8
Update TAIInstant

A cast is safe here
Add contributor jpgough
Standard copyright header
Update CopticChronology
Enhance and test CopticChronology
Fix pom
Enhance and fix Coptic chronology
Ensure time-scale package compiles and passes tests
Enhance the implementation specification
Enhance QuarterOfYear
Rename QuarterOfYear to Quarter
Add previous weekend day
Delete experiment classes
Enhance Quarter enum
Enhance AmPm enum
Remove classes with no sensible use case
Enhance DayOfMonth
Enhance DayOfMonth
Enhance DayOfYear