requirements: install 'bumpversion' (release)

glarrain · glarrain · commit 5581077ef7d8 · 2019-03-07T19:10:03.000-03:00
"A small command line tool to simplify releasing software by updating all version strings in your source code by the correct increment. Also creates commits and tags". https://github.com/peritus/bumpversion
diff --git a/requirements/release.txt b/requirements/release.txt
@@ -3,6 +3,7 @@
 -r base.txt
 
 # Required packages:
+bumpversion==0.5.3
 setuptools==40.6.3
 twine==1.12.1
 wheel==0.32.3
