GitLab

 * Bump version to 0.13

* Make the version template file simply host the upcoming version with
  an optional dev or .dev postfix
* Change the snapshot version form to X.Y.devN+df.Z were N is the revno
  and Z the revid

Remove obsolete code needed when we were using distribute.

In newer versions of git-buildpackage, the various git-* executables
have been replaced with a single gbp one that expects the command as
the first argument. Hence, "git-buildpackage" is replaced with: "gbp
 buildpackage"

In get_config() raise an error if the devflow.conf file does not exist.

* Add an option to disable colored output. The default value is auto,
which will determine if output is a tty and act accordingly. This can be
overridden by setting --color=yes to force color output, or --color=no
to disable it completely.
* Update copyright date

closes grnet/devflow#2

* Catch an uncaught assertion error
* Minor pep8 fixes
* Update copyright date

Extend devflow to support multiple version files of different templates.
To use multiple version files, the user has to define a comma-separated
list of version files and templates in the 'version_file' and
'version_template' options of the configuration file.

s/README/README.md

Add a _bump version function without any validation checking. Use the new
validate_version to perform the validation.

Add argument parser for input.
Add interactive functions for cleanup and changelog editing
Add automatic version bumping.