Log Message:
Update to 3.28

Upstream changes:
2013-05-04   David E. Wheeler <david@justatheory.org>
	* Release 3.28

	Removed use of 'done_testing' in t/white.t, which was added in
	v3.27. Thanks to Paul Howarth for the catch.

	Fixed inproperly calculated number of skipped tests in t/xhtml01.t
	when HTML::Entities is not intalled.

2013-05-03   David E. Wheeler <david@justatheory.org>
	* Release 3.27

	Added new warnings as defined by Pod::Checker, thanks to RJBS:
	+ "=over" without "=back"
	+ "L<>" starts or ends with whitespace
	+ raw "|" or "/" in "L<text|link>" text

	Added ->keep_encoding_directive, which is false by default, to
	prevent formatters from emitting a document's '=encoding'
	directive in most cases. That they emitted the encoding was a bug
	introduced in v3.26 (RT #84093). Now, only the DumpAsText and
	DumpAsXML formats set it to true. Patch from Patrice Dumas.

2013-02-27   David E. Wheeler <david@justatheory.org>
	* Release 3.26

	Fixed another test script to skip all tests when Encode is not
	installed.

	Added 'encoding()' and 'detected_encoding()' to return the current
	encoding and the encoding actually to decode the input file. The
	value from "=encoding" is also now kept in the output tree. Patch
	from Patrice Dumas (RT #74390).