Use a tox environment to update the release files

tox.ini

@@ -40,7 +40,18 @@ deps = readme
 skip_install = true
 commands = python setup.py check -r -s
 
+[testenv:release]
+changedir=
+decription = do a release, required posarg of the version number
+basepython = python3.6
+skipsdist = True
+usedevelop = True
+passenv = *
+deps =
+    towncrier
+commands =
+    towncrier --version {posargs} --yes
 
 [pytest]
 addopts = -rsfxX
-;; hello
+