[GRASS-git] [OSGeo/grass] a070f5: Welcome to 2020! Change version date to 2020 (#274)

[Huidae Cho]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: a070f5eb4203bbc9d222e31942bd26e896f06173
      https://github.com/OSGeo/grass/commit/a070f5eb4203bbc9d222e31942bd26e896f06173
  Author: Huidae Cho <grass4u at gmail.com>
  Date:   2020-01-07 (Tue, 07 Jan 2020)

  Changed paths:
    M INSTALL
    M REQUIREMENTS.html
    M grasslib.dox
    M include/VERSION

  Log Message:
  -----------
  Welcome to 2020! Change version date to 2020 (#274)

* Welcome to 2020! Change version date to 2020

* Update copyright years