diff --git a/requirements/dev.txt b/requirements/dev.txt
index 2c3d0ea..f2e3e70 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -4,70 +4,266 @@
 #
 #    make upgrade
 #
-alabaster==0.7.12         # via -r requirements/docs.txt, sphinx
-appdirs==1.4.3            # via -r requirements/compatibility.txt, virtualenv
-astroid==2.3.3            # via -r requirements/quality.txt, pylint
-attrs==19.3.0             # via -r requirements/test.txt, pytest
-babel==2.8.0              # via -r requirements/docs.txt, sphinx
-bleach==3.1.4             # via -r requirements/docs.txt, readme-renderer
-certifi==2020.4.5.1       # via -r requirements/docs.txt, requests
-chardet==3.0.4            # via -r requirements/docs.txt, requests
-coverage==5.0.4           # via -r requirements/test.txt, pytest-cov
-ddt==1.3.1                # via -r requirements/test.txt
-distlib==0.3.0            # via -r requirements/compatibility.txt, virtualenv
-django==2.2.12            # via -r requirements/base.txt, -r requirements/test.txt
-docutils==0.16            # via -r requirements/docs.txt, readme-renderer, sphinx
-filelock==3.0.12          # via -r requirements/compatibility.txt, tox, virtualenv
-idna==2.9                 # via -r requirements/docs.txt, requests
-imagesize==1.2.0          # via -r requirements/docs.txt, sphinx
-importlib-metadata==1.6.0  # via -r requirements/compatibility.txt, -r requirements/test.txt, importlib-resources, pluggy, pytest, tox, virtualenv
-importlib-resources==1.4.0  # via -r requirements/compatibility.txt, virtualenv
-isort==4.3.21             # via -r requirements/quality.txt, pylint
-jinja2==2.11.1            # via -r requirements/docs.txt, sphinx
-lazy-object-proxy==1.4.3  # via -r requirements/quality.txt, astroid
-markupsafe==1.1.1         # via -r requirements/docs.txt, jinja2
-mccabe==0.6.1             # via -r requirements/quality.txt, pylint
-more-itertools==8.2.0     # via -r requirements/test.txt, pytest
-packaging==20.3           # via -r requirements/compatibility.txt, -r requirements/docs.txt, -r requirements/test.txt, pytest, sphinx, tox
-pathlib2==2.3.5           # via -r requirements/test.txt, pytest
-pkginfo==1.5.0.1          # via -r requirements/docs.txt, twine
-pluggy==0.13.1            # via -r requirements/compatibility.txt, -r requirements/test.txt, pytest, tox
-py==1.8.1                 # via -r requirements/compatibility.txt, -r requirements/test.txt, pytest, tox
-pycodestyle==2.5.0        # via -r requirements/quality.txt
-pygments==2.6.1           # via -r requirements/docs.txt, readme-renderer, sphinx
-pylint==2.4.4             # via -r requirements/quality.txt
-pyparsing==2.4.7          # via -r requirements/compatibility.txt, -r requirements/docs.txt, -r requirements/test.txt, packaging
-pytest-cov==2.8.1         # via -r requirements/test.txt
-pytest-django==3.9.0      # via -r requirements/test.txt
-pytest==5.4.1             # via -r requirements/test.txt, pytest-cov, pytest-django
-pytz==2019.3              # via -r requirements/base.txt, -r requirements/docs.txt, -r requirements/test.txt, babel, django
-readme-renderer==25.0     # via -r requirements/docs.txt, twine
-requests-toolbelt==0.9.1  # via -r requirements/docs.txt, twine
-requests==2.23.0          # via -r requirements/docs.txt, requests-toolbelt, sphinx, twine
-six==1.14.0               # via -r requirements/compatibility.txt, -r requirements/docs.txt, -r requirements/quality.txt, -r requirements/test.txt, astroid, bleach, packaging, pathlib2, readme-renderer, tox, virtualenv
-snowballstemmer==2.0.0    # via -r requirements/docs.txt, sphinx
-sphinx-rtd-theme==0.4.3   # via -r requirements/docs.txt
-sphinx==3.0.0             # via -r requirements/docs.txt, sphinx-rtd-theme
-sphinxcontrib-applehelp==1.0.2  # via -r requirements/docs.txt, sphinx
-sphinxcontrib-devhelp==1.0.2  # via -r requirements/docs.txt, sphinx
-sphinxcontrib-htmlhelp==1.0.3  # via -r requirements/docs.txt, sphinx
-sphinxcontrib-jsmath==1.0.1  # via -r requirements/docs.txt, sphinx
-sphinxcontrib-qthelp==1.0.3  # via -r requirements/docs.txt, sphinx
-sphinxcontrib-serializinghtml==1.1.4  # via -r requirements/docs.txt, sphinx
-sqlparse==0.3.1           # via -r requirements/base.txt, -r requirements/test.txt, django
-toml==0.10.0              # via -r requirements/compatibility.txt, tox
-tox-battery==0.5.2        # via -r requirements/compatibility.txt
-tox==3.14.6               # via -r requirements/compatibility.txt, tox-battery
-tqdm==4.45.0              # via -r requirements/docs.txt, twine
-twine==1.15.0             # via -r requirements/docs.txt
-typed-ast==1.4.1          # via -r requirements/quality.txt, astroid
-urllib3==1.25.8           # via -r requirements/docs.txt, requests
-virtualenv==20.0.17       # via -r requirements/compatibility.txt, tox
-wcwidth==0.1.9            # via -r requirements/test.txt, pytest
-webencodings==0.5.1       # via -r requirements/docs.txt, bleach
-wheel==0.34.2             # via -r requirements/docs.txt
-wrapt==1.11.2             # via -r requirements/quality.txt, astroid
-zipp==1.2.0               # via -r requirements/compatibility.txt, -r requirements/test.txt, importlib-metadata, importlib-resources
+alabaster==0.7.12
+    # via
+    #   -r docs.txt
+    #   sphinx
+appdirs==1.4.3
+    # via
+    #   -r compatibility.txt
+    #   virtualenv
+astroid==2.3.3
+    # via
+    #   -r quality.txt
+    #   pylint
+attrs==19.3.0
+    # via
+    #   -r test.txt
+    #   pytest
+babel==2.9.1
+    # via
+    #   -r docs.txt
+    #   sphinx
+bleach==3.1.4
+    # via
+    #   -r docs.txt
+    #   readme-renderer
+certifi==2020.4.5.1
+    # via
+    #   -r docs.txt
+    #   requests
+chardet==3.0.4
+    # via
+    #   -r docs.txt
+    #   requests
+coverage==5.0.4
+    # via
+    #   -r test.txt
+    #   pytest-cov
+ddt==1.3.1
+    # via -r test.txt
+distlib==0.3.0
+    # via
+    #   -r compatibility.txt
+    #   virtualenv
+django==2.2.12
+    # via -r base.txt
+docutils==0.16
+    # via
+    #   -r docs.txt
+    #   readme-renderer
+    #   sphinx
+filelock==3.0.12
+    # via
+    #   -r compatibility.txt
+    #   tox
+    #   virtualenv
+idna==2.9
+    # via
+    #   -r docs.txt
+    #   requests
+imagesize==1.2.0
+    # via
+    #   -r docs.txt
+    #   sphinx
+importlib-metadata==1.6.0
+    # via
+    #   -r compatibility.txt
+    #   -r test.txt
+importlib-resources==1.4.0
+    # via -r compatibility.txt
+isort==4.3.21
+    # via
+    #   -r quality.txt
+    #   pylint
+jinja2==2.11.1
+    # via
+    #   -r docs.txt
+    #   sphinx
+lazy-object-proxy==1.4.3
+    # via
+    #   -r quality.txt
+    #   astroid
+markupsafe==1.1.1
+    # via
+    #   -r docs.txt
+    #   jinja2
+mccabe==0.6.1
+    # via
+    #   -r quality.txt
+    #   pylint
+more-itertools==8.2.0
+    # via
+    #   -r test.txt
+    #   pytest
+packaging==20.3
+    # via
+    #   -r compatibility.txt
+    #   -r docs.txt
+    #   -r test.txt
+    #   pytest
+    #   sphinx
+    #   tox
+pathlib2==2.3.5
+    # via -r test.txt
+pkginfo==1.5.0.1
+    # via
+    #   -r docs.txt
+    #   twine
+pluggy==0.13.1
+    # via
+    #   -r compatibility.txt
+    #   -r test.txt
+    #   pytest
+    #   tox
+py==1.8.1
+    # via
+    #   -r compatibility.txt
+    #   -r test.txt
+    #   pytest
+    #   tox
+pycodestyle==2.5.0
+    # via -r quality.txt
+pygments==2.6.1
+    # via
+    #   -r docs.txt
+    #   readme-renderer
+    #   sphinx
+pylint==2.4.4
+    # via -r quality.txt
+pyparsing==2.4.7
+    # via
+    #   -r compatibility.txt
+    #   -r docs.txt
+    #   -r test.txt
+    #   packaging
+pytest==5.4.1
+    # via
+    #   -r test.txt
+    #   pytest-cov
+    #   pytest-django
+pytest-cov==2.8.1
+    # via -r test.txt
+pytest-django==3.9.0
+    # via -r test.txt
+pytz==2019.3
+    # via
+    #   -r base.txt
+    #   -r docs.txt
+    #   -r test.txt
+    #   babel
+    #   django
+readme-renderer==25.0
+    # via
+    #   -r docs.txt
+    #   twine
+requests==2.23.0
+    # via
+    #   -r docs.txt
+    #   requests-toolbelt
+    #   sphinx
+    #   twine
+requests-toolbelt==0.9.1
+    # via
+    #   -r docs.txt
+    #   twine
+six==1.14.0
+    # via
+    #   -r compatibility.txt
+    #   -r docs.txt
+    #   -r quality.txt
+    #   -r test.txt
+    #   astroid
+    #   bleach
+    #   packaging
+    #   pathlib2
+    #   readme-renderer
+    #   tox
+    #   virtualenv
+snowballstemmer==2.0.0
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinx==3.0.0
+    # via
+    #   -r docs.txt
+    #   sphinx-rtd-theme
+sphinx-rtd-theme==0.4.3
+    # via -r docs.txt
+sphinxcontrib-applehelp==1.0.2
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinxcontrib-devhelp==1.0.2
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinxcontrib-htmlhelp==1.0.3
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinxcontrib-jsmath==1.0.1
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinxcontrib-qthelp==1.0.3
+    # via
+    #   -r docs.txt
+    #   sphinx
+sphinxcontrib-serializinghtml==1.1.4
+    # via
+    #   -r docs.txt
+    #   sphinx
+sqlparse==0.3.1
+    # via
+    #   -r base.txt
+    #   -r test.txt
+    #   django
+toml==0.10.0
+    # via
+    #   -r compatibility.txt
+    #   tox
+tox==3.14.6
+    # via
+    #   -r compatibility.txt
+    #   tox-battery
+tox-battery==0.5.2
+    # via -r compatibility.txt
+tqdm==4.45.0
+    # via
+    #   -r docs.txt
+    #   twine
+twine==1.15.0
+    # via -r docs.txt
+typed-ast==1.4.1
+    # via -r quality.txt
+urllib3==1.25.8
+    # via
+    #   -r docs.txt
+    #   requests
+virtualenv==20.0.17
+    # via
+    #   -r compatibility.txt
+    #   tox
+wcwidth==0.1.9
+    # via
+    #   -r test.txt
+    #   pytest
+webencodings==0.5.1
+    # via
+    #   -r docs.txt
+    #   bleach
+wheel==0.34.2
+    # via -r docs.txt
+wrapt==1.11.2
+    # via
+    #   -r quality.txt
+    #   astroid
+zipp==1.2.0
+    # via
+    #   -r compatibility.txt
+    #   -r test.txt
+    #   importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools
diff --git a/requirements/docs.txt b/requirements/docs.txt
index dae9b4f..92121ee 100644
--- a/requirements/docs.txt
+++ b/requirements/docs.txt
@@ -4,39 +4,84 @@
 #
 #    make upgrade
 #
-alabaster==0.7.12         # via sphinx
-babel==2.8.0              # via sphinx
-bleach==3.1.4             # via readme-renderer
-certifi==2020.4.5.1       # via requests
-chardet==3.0.4            # via requests
-docutils==0.16            # via readme-renderer, sphinx
-idna==2.9                 # via requests
-imagesize==1.2.0          # via sphinx
-jinja2==2.11.1            # via sphinx
-markupsafe==1.1.1         # via jinja2
-packaging==20.3           # via sphinx
-pkginfo==1.5.0.1          # via twine
-pygments==2.6.1           # via readme-renderer, sphinx
-pyparsing==2.4.7          # via packaging
-pytz==2019.3              # via babel
-readme-renderer==25.0     # via twine
-requests-toolbelt==0.9.1  # via twine
-requests==2.23.0          # via requests-toolbelt, sphinx, twine
-six==1.14.0               # via bleach, packaging, readme-renderer
-snowballstemmer==2.0.0    # via sphinx
-sphinx-rtd-theme==0.4.3   # via -r requirements/docs.in
-sphinx==3.0.0             # via -r requirements/docs.in, sphinx-rtd-theme
-sphinxcontrib-applehelp==1.0.2  # via sphinx
-sphinxcontrib-devhelp==1.0.2  # via sphinx
-sphinxcontrib-htmlhelp==1.0.3  # via sphinx
-sphinxcontrib-jsmath==1.0.1  # via sphinx
-sphinxcontrib-qthelp==1.0.3  # via sphinx
-sphinxcontrib-serializinghtml==1.1.4  # via sphinx
-tqdm==4.45.0              # via twine
-twine==1.15.0             # via -r requirements/docs.in
-urllib3==1.25.8           # via requests
-webencodings==0.5.1       # via bleach
-wheel==0.34.2             # via -r requirements/docs.in
+alabaster==0.7.12
+    # via sphinx
+babel==2.9.1
+    # via sphinx
+bleach==3.1.4
+    # via readme-renderer
+certifi==2020.4.5.1
+    # via requests
+chardet==3.0.4
+    # via requests
+docutils==0.16
+    # via
+    #   readme-renderer
+    #   sphinx
+idna==2.9
+    # via requests
+imagesize==1.2.0
+    # via sphinx
+jinja2==2.11.1
+    # via sphinx
+markupsafe==1.1.1
+    # via jinja2
+packaging==20.3
+    # via sphinx
+pkginfo==1.5.0.1
+    # via twine
+pygments==2.6.1
+    # via
+    #   readme-renderer
+    #   sphinx
+pyparsing==2.4.7
+    # via packaging
+pytz==2019.3
+    # via babel
+readme-renderer==25.0
+    # via twine
+requests==2.23.0
+    # via
+    #   requests-toolbelt
+    #   sphinx
+    #   twine
+requests-toolbelt==0.9.1
+    # via twine
+six==1.14.0
+    # via
+    #   bleach
+    #   packaging
+    #   readme-renderer
+snowballstemmer==2.0.0
+    # via sphinx
+sphinx==3.0.0
+    # via
+    #   -r docs.in
+    #   sphinx-rtd-theme
+sphinx-rtd-theme==0.4.3
+    # via -r docs.in
+sphinxcontrib-applehelp==1.0.2
+    # via sphinx
+sphinxcontrib-devhelp==1.0.2
+    # via sphinx
+sphinxcontrib-htmlhelp==1.0.3
+    # via sphinx
+sphinxcontrib-jsmath==1.0.1
+    # via sphinx
+sphinxcontrib-qthelp==1.0.3
+    # via sphinx
+sphinxcontrib-serializinghtml==1.1.4
+    # via sphinx
+tqdm==4.45.0
+    # via twine
+twine==1.15.0
+    # via -r docs.in
+urllib3==1.25.8
+    # via requests
+webencodings==0.5.1
+    # via bleach
+wheel==0.34.2
+    # via -r docs.in
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools