Fixes #395.

Fixes #412.

corrected fix for the calendar example: do NOT mix UTC and Local TimeZone date operations in calculations which depend on identifying day/month transitions - default JavaScript Date object works with 'local timezone'. Fix tested in AZ/USA and Amsterdam/EUR timezones.

the use of getUTCxxx() instead of getXxx() draw the wrong path for some timezone, the t1 will be previous year instead since t0 is not UTC timezoned

bugfix for D3.JS bug in calendar demo: edge around months was drawn incorrectly; this was apparent at each December month.

Array.reverse does not create a copy of the array, so we must slice first.

Thanks to "code golfer" @mbostock. :)

Fixes #405.

Fixes #397.

It's like selection.sort, except it assumes that the data is already sorted;
the elements are reordered to match the selection.

Now if you add an "svg" element, we automatically infer the namespace because
there is an "svg" namespace prefix. In conjunction with inheriting the namespace
from the parent element, this means that namespaces are almost optional!

Since the ordinal scale's domain is not continuous, the brush extent is reported
in the range rather than in the domain for ordinal scales. We'll leave it to the
caller to interpret this as desired.