[GRASS-git] [OSGeo/grass] 89b2e7: g.extension: change to python3 (#83)

[AnikaBettge]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: 89b2e786256b4c19696881c6e6ec15fcee001559
      https://github.com/OSGeo/grass/commit/89b2e786256b4c19696881c6e6ec15fcee001559
  Author: AnikaBettge <37300249+AnikaBettge at users.noreply.github.com>
  Date:   2019-08-11 (Sun, 11 Aug 2019)

  Changed paths:
    M scripts/g.extension/g.extension.py

  Log Message:
  -----------
  g.extension: change to python3 (#83)

* g.extension: change to python3
* g.extension: update for metamodules
* g.extension: python3 shebangs for windows