autoconf-archive-2021.02.19 released [stable]

A new release of Autoconf Archive version 2021.02.19 is available for download.

Here are the compressed sources and a GPG detached signature[*]:
  https://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2021.02.19.tar.xz
  https://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2021.02.19.tar.xz.sig

Use a mirror for higher download bandwidth:
  https://www.gnu.org/order/ftp.html

[*] Use a .sig file to verify that the corresponding file (without the
.sig suffix) is intact.  First, be sure to download both the .sig file
and the corresponding tarball.  Then, run a command like this:

  gpg --verify autoconf-archive-2021.02.19.tar.xz.sig

If that command fails because you don't have the required public key,
then run this command to import it:

  gpg --keyserver keys.gnupg.net --recv-keys 99089D72

and rerun the 'gpg --verify' command.

This release was bootstrapped with the following tools:
  Autoconf 2.70
  Automake 1.16.3
  Gnulib v0.1-4450-g4d4fb2be2

NEWS

* Noteworthy changes in release 2021.02.19 (2021-02-19) [stable]

  The macros AX_CHECK_PCRE2 and AX_PROG_ROBOT have been added. Many other
  macros have received updates.