Add versioneer (numba#11)

* Add versioneer

Installed versioneer: pip install versioneer
Added code in setup.py. Added code in setup.cfg.
Install: versioneer install

* Add tag_prefix in setup.cfg

Author: PokhodenkoSA

.gitattributes

@@ -0,0 +1 @@
+numba_dppy/_version.py export-subst

MANIFEST.in

@@ -3,3 +3,5 @@ include README.md setup.py LICENSE
 
 recursive-include numba_dppy *.cl
 
+include versioneer.py
+include numba_dppy/_version.py

numba_dppy/__init__.py

@@ -517,3 +517,7 @@ def test(*args, **kwargs):
         dppl_error()
 
     return numba.testing.test("numba_dppy.tests", *args, **kwargs)
+
+from ._version import get_versions
+__version__ = get_versions()['version']
+del get_versions