Upgrade TZ database to 2015b

1.15.1

Version 1.15.1: upgrade TZ database to 2015b

Duration remembers units and it can also be used for days, months, years.

1.15.0

Version 1.15.0: Duration remembers units and it can also be used for …

Add Duration.abs() and tc.abs() functions.

1.14.0

Version 1.14.0: add Duration.abs() and tc.abs() functions.

Allow "without DST" suffix on time zone names.

1.13.2

Release 1.13.2: Allow "without DST" suffix on time zone names.

Check for nonexisting time zone name in timezone constructor.

1.13.1

Version 1.13.1: report nonexisting time zone name in timezone constru…

Add fromExcel() function to create DateTime from Excel timestamp number

1.13.0

Version 1.13.0

Upgrade TZ database to 2015a.

1.12.1

Upgrade TZ database to 2015a.

equals() and identical() methods for Period

• Add Period#equals() which checks whether two periods have the same net effect.
• Add Period#identical() which checks whether two periods were constructed in the same way.
• Add TimeZone#identical() which checks whether two time zones were constructed the same way.
• Adjust DateTime#identical() to no longer allow equal-but-not-identical time zone.
• Made last Period constructor argument optional (default: regular local time)

Remove source-map-support cruft.

Solves Issue #20

Bugfix in DateTime#add and DateTime#sub

1.11.1

Version 1.11.1: Bugfix in DateTime#add and DateTime#sub