Releax Sphinx version and bump mypy version.

Author: domdfcoding

doc-source/requirements.txt

@@ -5,7 +5,7 @@ furo>=2020.11.19b18
 pyyaml>=5.3.1
 repo-helper-sphinx-theme>=0.0.2
 seed-intersphinx-mapping>=0.3.1
-sphinx<3.4.0,>=3.0.3
+sphinx>=3.0.3
 sphinx-copybutton>=0.2.12
 sphinx-debuginfo>=0.1.0
 sphinx-notfound-page>=0.5

repo_helper.yml

@@ -14,6 +14,7 @@ use_whey: true
 min_coverage: 100
 sphinx_html_theme: furo
 standalone_contrib_guide: true
+mypy_version: "0.812"
 
 conda_channels:
  - conda-forge

tox.ini

@@ -60,7 +60,7 @@ basepython = python3.6
 ignore_errors = True
 changedir = {toxinidir}
 deps =
-    mypy==0.800
+    mypy==0.812
     -r{toxinidir}/tests/requirements.txt
 commands = mypy flake8_strftime tests {posargs}