gnu: Add python-bumpversion.

* gnu/packages/python-xyz.scm (python-bumpversion): New variable.

gnu/packages/python-xyz.scm

@@ -2631,6 +2631,24 @@ and several other projects.")
 (define-public python2-guzzle-sphinx-theme
   (package-with-python2 python-guzzle-sphinx-theme))
 
+(define-public python-bumpversion
+  (package
+    (name "python-bumpversion")
+    (version "0.5.3")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "bumpversion" version))
+       (sha256
+        (base32
+         "0zn7694yfipxg35ikkfh7kvgl2fissha3dnqad2c5bvsvmrwhi37"))))
+    (build-system python-build-system)
+    (home-page "https://github.com/peritus/bumpversion")
+    (synopsis "Tool to bump software version")
+    (description "This tool provides a command-line interface (CLI) to bump a
+software version simply.")
+    (license license:expat)))
+
 (define-public python-rst.linker
   (package
     (name "python-rst.linker")