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Support for time-zones and their rules.
Daylight Saving Time and Time-Zones are concepts used by Governments to alter local time. This package provides support for time-zones, their rules and the resulting gaps and overlaps in the local time-line typically caused by Daylight Saving Time.
 Unless otherwise noted, passing a null argument to a constructor or method in any class or interface
 in this package will cause a NullPointerException to be thrown.
 The Javadoc "@param" definition is used to summarise the null-behavior.
 The "@throws NullPointerException" is not explicitly documented in each method.
 
 All calculations should check for numeric overflow and throw either an ArithmeticException
 or a DateTimeException.
 
| ZoneOffsetTransition | A transition between two offsets caused by a discontinuity in the local time-line. | 
| ZoneOffsetTransitionRule | A rule expressing how to create a transition. | 
| ZoneRules | The rules defining how the zone offset varies for a single time-zone. | 
| ZoneOffsetTransitionRule.TimeDefinition | A definition of the way a local time can be converted to the actual transition date-time. | 
| ZoneRulesException | Thrown to indicate a problem with time-zone configuration. |