Prepare release 4.2.1

Author: PabloCastellano

README.rst

@@ -11,8 +11,8 @@ Also ships the latest jQuery compatible with Bootstrap, for optional inclusion.
 .. |latest-version| image:: https://img.shields.io/pypi/v/django-bootstrap-static.svg
    :alt: Latest version on PyPI
    :target: https://pypi.python.org/pypi/django-bootstrap-static
-.. |bootstrap| image:: https://img.shields.io/badge/Bootstrap-v4.1.3-563d7c.svg
-   :alt: Bootstrap 4.1.3
+.. |bootstrap| image:: https://img.shields.io/badge/Bootstrap-v4.2.1-563d7c.svg
+   :alt: Bootstrap 4.2.1
    :target: https://getbootstrap.com/
 .. |jquery| image:: https://img.shields.io/badge/jQuery-v3.3.1-0769ad.svg
    :alt: jQuery 3.3.1

setup.py

@@ -1,6 +1,6 @@
 from setuptools import setup, find_packages
 
-version = '4.1.3'
+version = '4.2.1'
 
 setup(name='django-bootstrap-static',
       version=version,