Collection of reform calendars

[MenoData]

The websites

• https://en.wikipedia.org/wiki/Calendar_reform
• http://myweb.ecu.edu/mccartyr/calendar-reform.html

contain links to various calendar reform studies and proposals. Time4J could introduce a new reform-subpackage below net.time4j.calendar for such more or less synthetic calendars. Examples:

• World calendar (UN-proposal) => https://en.wikipedia.org/wiki/World_Calendar
• Pax-calendar (Colligan 1930) => http://myweb.ecu.edu/mccartyr/colligan.html
• Eastman-calendar => http://myweb.ecu.edu/mccartyr/eastman.html
• Symmetry454 => http://individual.utoronto.ca/kalendis/symmetry.htm
• Hanke-Henry => https://en.wikipedia.org/wiki/Hanke%E2%80%93Henry_Permanent_Calendar
• Tranquility calendar => https://en.wikipedia.org/wiki/Tranquility_Calendar

All these proposals (with exception of Tranquility) don't mention any eras (seems to be out of scope in the documents as seen so far), so it is probably the best to implement these calendars just without eras which also serves for much more convenience.

Probably the new reform-package should belong to the misc-module.