Literals in the blame module are now always in unicode.

Without this fix, there is a potential for some UnicodeEncodeErrors when
using non-unicode literals with string.format().

gitinspector/blame.py

@@ -18,6 +18,7 @@
 # along with gitinspector. If not, see <http://www.gnu.org/licenses/>.
 
 from __future__ import print_function
+from __future__ import unicode_literals
 from outputable import Outputable
 from changes import FileDiff
 import codecs