Fix old class names
Checkstyle
Remove generics from ChronoLocalDate
Change ChronoLocalDate to abstract class

Add timeLineOrder() and from()
Change ChronoLocalDateTime to abstract class

Add timeLineOrder() and from()
Change ChronoZonedDateTime to abstract class

Add timeLineOrder() and from()
Update package.html
Fix Javadoc
Add Chronology.dateEpochDay()
Fix ChronoLocalDate.until() return type
Remove Chronology.dateTime()
Remove era constants
Add placeholder Chronology.resolveDate()
Test and fix TemporalField
Fix references to Chrono