git-assembler 1.3

* Rules now support wildcard patterns (glob-like or regex) in both the
  target of a rule or as any dependency.
* `git-assembler` now ignores versioned ``.gitassembler`` files that are
  symlinked to avoid reading from a remotely-controlled file location.
* A new ``-e``/``--edit`` flag has been added to automatically spawn an
  editor on the currently active assembly file.
* `git-assembler` now passes-through branch/ref names as binary, without
  assuming any specific encoding, matching git's underlying behavior.
* The default merge fast-forward behavior (``--ff`` or ``--no-ff``) can
  now be controlled using the ``assembler.mergeff`` configuration entry.
  Thanks to Erich Gubler and Gustavo Sousa.
* Documentation fixes thanks to Kipras Melnikovas.