Update some boilerplate

Author: jwodder

README.rst

@@ -1,10 +1,10 @@
-.. image:: http://www.repostatus.org/badges/latest/active.svg
-    :target: http://www.repostatus.org/#active
+.. image:: https://www.repostatus.org/badges/latest/active.svg
+    :target: https://www.repostatus.org/#active
     :alt: Project Status: Active — The project has reached a stable, usable
           state and is being actively developed.
 
-.. image:: https://github.com/jwodder/interleave/workflows/Test/badge.svg?branch=master
-    :target: https://github.com/jwodder/interleave/actions?workflow=Test
+.. image:: https://github.com/jwodder/interleave/actions/workflows/test.yml/badge.svg
+    :target: https://github.com/jwodder/interleave/actions/workflows/test.yml
     :alt: CI Status
 
 .. image:: https://codecov.io/gh/jwodder/interleave/branch/master/graph/badge.svg

tox.ini

@@ -54,13 +54,12 @@ exclude_lines =
 
 [flake8]
 doctests = True
-exclude = .*/,build/,dist/,test/data,venv/
-hang-closing = False
+extend-exclude = build/,dist/,test/data,venv/
 max-doc-length = 100
 max-line-length = 80
 unused-arguments-ignore-stub-functions = True
-select = A,B,B902,B950,C,E,E242,F,U100,W
-ignore = B005,E203,E262,E266,E501,W503
+extend-select = B901,B902,B950
+ignore = A003,B005,E203,E262,E266,E501,U101,W503
 
 [isort]
 atomic = True