[tz] tzdb data for North and Central America

Hello. You might want to note that the America/Halifax timezone also applies to Îles-de-la-Madeleine and the Listuguj reserve in Quebec. Officially, this came into effect on January 1, 2007 (*Legal Time Act*, CQLR c T-5.1), but the legislative debates surrounding that bill say that it is "accommodating the customs and practices" of those regions, which suggests that they have always been in-line with Halifax. Also, you call America/Whitehorse "south Yukon" and America/Dawson "north Yukon", but the divide is actually between east and west, at the 138th meridian. -- *Jeffery Nichols*, JD, MPA, MA