[tex-eplain] eplain-3.9 released

[Karl Berry]

Eplain version 3.9 is available from CTAN via https://ctan.org/pkg/eplain
and directly from https://tug.org/eplain.  It's also included in TeX
distributions.

This minor release fixes a btxmac.tex bug introduced in 3.8 which caused
\providecommand to fail. Also, the documentation now has a section
on creating PDF bookmarks (a.k.a. outlines), and url and other updates.

General: the Eplain macro package extends and expands on the definitions
in plain TeX. It's intended to provide useful definitions regardless of
how a document might be formatted, such as cross-referencing by labels.

Eplain was originally developed for the book TeX for the Impatient,
published by Addison-Wesley in 1990. That book is now freely available,
from https://ctan.org/pkg/impatient, along with several translations.
(It's also in TeX distributions.)

Please send bug reports to tex-eplain at tug.org
(mailing list web interface: https://lists.tug.org/tex-eplain).

Happy expanded TeXing,
Karl