Log Message:
tex-draftwatermark{,-doc}: update to 3.0

3.0
Take advantage of the new LaTeX shipout hooks and drop dependency on
"everypage" on modern LaTeX. Ship a legacy version of its own codebase
(that gets automatically loaded and still relies on "everypage") for users
of older versions of LaTeX.

2.2
Let the \\ command be used in the watermark text.
Provide alignment control for multiline watermark text.
Fix documentation about interline spacing for multiline watermark text.

2.1
Version 2.1 of the package makes the watermark anchor information
re-evaluated on every page to provide greater flexibility and ease
differentiating the watermark position on odd/even pages. Should be
backward compatible with 2.0.