create a changelog file

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
add the version to dunder init

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
add --version and trigger help with no args

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
make use of the __version__ in setup.py

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
update the changelog with this branch changes

Signed-off-by: Alfredo Deza <alfredo@deza.pe>
rules:  use dh_python2

Signed-off-by: Gary Lowell  <gary.lowell@inktank.com>
build scripts:  Update for release builds.

Allow alternate signing keyid to be specified in environment
variable.  For debian add backport tags to release version
numbers if release flag is set.

Signed-off-by: Gary Lowell  <gary.lowell@inktank.com>
v1.2
Merge pull request #39 from alfredodeza/5934

CLI updates for --version, --help and exceptions from exc.DeployError