diff --git a/.constraints/py3.10.txt b/.constraints/py3.10.txt
index c823467..0eee3a3 100644
--- a/.constraints/py3.10.txt
+++ b/.constraints/py3.10.txt
@@ -17,16 +17,16 @@ certifi==2024.8.30
 cffi==1.17.1
 cfgv==3.4.0
 chardet==5.2.0
-charset-normalizer==3.3.2
+charset-normalizer==3.4.0
 click==8.1.7
 colorama==0.4.6
 comm==0.2.2
 contourpy==1.3.0
 cycler==0.12.1
-debugpy==1.8.6
+debugpy==1.8.7
 decorator==5.1.1
 defusedxml==0.7.1
-distlib==0.3.8
+distlib==0.3.9
 docutils==0.21.2
 exceptiongroup==1.2.2
 executing==2.1.0
@@ -51,7 +51,7 @@ jinja2==3.1.4
 json5==0.9.25
 jsonpointer==3.0.0
 jsonschema==4.23.0
-jsonschema-specifications==2023.12.1
+jsonschema-specifications==2024.10.1
 jupyter-cache==1.0.0
 jupyter-client==8.6.3
 jupyter-core==5.7.2
@@ -67,7 +67,7 @@ jupyterlab-widgets==3.0.13
 kiwisolver==1.4.7
 latexcodec==3.0.0
 markdown-it-py==3.0.0
-markupsafe==2.1.5
+markupsafe==3.0.1
 matplotlib==3.9.2
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.2
@@ -90,7 +90,7 @@ pexpect==4.9.0
 pillow==10.4.0
 platformdirs==4.3.6
 pluggy==1.5.0
-pre-commit==4.0.0
+pre-commit==4.0.1
 prometheus-client==0.21.0
 prompt-toolkit==3.0.48
 psutil==6.0.0
@@ -118,8 +118,8 @@ six==1.16.0
 sniffio==1.3.1
 snowballstemmer==2.2.0
 soupsieve==2.6
-sphinx==8.0.2
-sphinx-api-relink==0.0.9
+sphinx==8.1.0
+sphinx-api-relink==0.0.10
 sphinx-autobuild==2024.10.3
 sphinx-book-theme==1.1.3
 sphinx-comments==0.0.3
@@ -149,7 +149,7 @@ types-python-dateutil==2.9.0.20241003
 typing-extensions==4.12.2
 uri-template==1.3.0
 urllib3==2.2.3
-uvicorn==0.31.0
+uvicorn==0.31.1
 virtualenv==20.26.6
 watchfiles==0.24.0
 wcwidth==0.2.13
diff --git a/.constraints/py3.11.txt b/.constraints/py3.11.txt
index 38b93eb..a5310ea 100644
--- a/.constraints/py3.11.txt
+++ b/.constraints/py3.11.txt
@@ -17,16 +17,16 @@ certifi==2024.8.30
 cffi==1.17.1
 cfgv==3.4.0
 chardet==5.2.0
-charset-normalizer==3.3.2
+charset-normalizer==3.4.0
 click==8.1.7
 colorama==0.4.6
 comm==0.2.2
 contourpy==1.3.0
 cycler==0.12.1
-debugpy==1.8.6
+debugpy==1.8.7
 decorator==5.1.1
 defusedxml==0.7.1
-distlib==0.3.8
+distlib==0.3.9
 docutils==0.21.2
 executing==2.1.0
 fastjsonschema==2.20.0
@@ -50,7 +50,7 @@ jinja2==3.1.4
 json5==0.9.25
 jsonpointer==3.0.0
 jsonschema==4.23.0
-jsonschema-specifications==2023.12.1
+jsonschema-specifications==2024.10.1
 jupyter-cache==1.0.0
 jupyter-client==8.6.3
 jupyter-core==5.7.2
@@ -66,7 +66,7 @@ jupyterlab-widgets==3.0.13
 kiwisolver==1.4.7
 latexcodec==3.0.0
 markdown-it-py==3.0.0
-markupsafe==2.1.5
+markupsafe==3.0.1
 matplotlib==3.9.2
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.2
@@ -89,7 +89,7 @@ pexpect==4.9.0
 pillow==10.4.0
 platformdirs==4.3.6
 pluggy==1.5.0
-pre-commit==4.0.0
+pre-commit==4.0.1
 prometheus-client==0.21.0
 prompt-toolkit==3.0.48
 psutil==6.0.0
@@ -117,8 +117,8 @@ six==1.16.0
 sniffio==1.3.1
 snowballstemmer==2.2.0
 soupsieve==2.6
-sphinx==8.0.2
-sphinx-api-relink==0.0.9
+sphinx==8.1.0
+sphinx-api-relink==0.0.10
 sphinx-autobuild==2024.10.3
 sphinx-book-theme==1.1.3
 sphinx-comments==0.0.3
@@ -147,7 +147,7 @@ types-python-dateutil==2.9.0.20241003
 typing-extensions==4.12.2
 uri-template==1.3.0
 urllib3==2.2.3
-uvicorn==0.31.0
+uvicorn==0.31.1
 virtualenv==20.26.6
 watchfiles==0.24.0
 wcwidth==0.2.13
diff --git a/.constraints/py3.12.txt b/.constraints/py3.12.txt
index 3f5b8a5..8535d67 100644
--- a/.constraints/py3.12.txt
+++ b/.constraints/py3.12.txt
@@ -17,16 +17,16 @@ certifi==2024.8.30
 cffi==1.17.1
 cfgv==3.4.0
 chardet==5.2.0
-charset-normalizer==3.3.2
+charset-normalizer==3.4.0
 click==8.1.7
 colorama==0.4.6
 comm==0.2.2
 contourpy==1.3.0
 cycler==0.12.1
-debugpy==1.8.6
+debugpy==1.8.7
 decorator==5.1.1
 defusedxml==0.7.1
-distlib==0.3.8
+distlib==0.3.9
 docutils==0.21.2
 executing==2.1.0
 fastjsonschema==2.20.0
@@ -50,7 +50,7 @@ jinja2==3.1.4
 json5==0.9.25
 jsonpointer==3.0.0
 jsonschema==4.23.0
-jsonschema-specifications==2023.12.1
+jsonschema-specifications==2024.10.1
 jupyter-cache==1.0.0
 jupyter-client==8.6.3
 jupyter-core==5.7.2
@@ -66,7 +66,7 @@ jupyterlab-widgets==3.0.13
 kiwisolver==1.4.7
 latexcodec==3.0.0
 markdown-it-py==3.0.0
-markupsafe==2.1.5
+markupsafe==3.0.1
 matplotlib==3.9.2
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.2
@@ -89,7 +89,7 @@ pexpect==4.9.0
 pillow==10.4.0
 platformdirs==4.3.6
 pluggy==1.5.0
-pre-commit==4.0.0
+pre-commit==4.0.1
 prometheus-client==0.21.0
 prompt-toolkit==3.0.48
 psutil==6.0.0
@@ -117,8 +117,8 @@ six==1.16.0
 sniffio==1.3.1
 snowballstemmer==2.2.0
 soupsieve==2.6
-sphinx==8.0.2
-sphinx-api-relink==0.0.9
+sphinx==8.1.0
+sphinx-api-relink==0.0.10
 sphinx-autobuild==2024.10.3
 sphinx-book-theme==1.1.3
 sphinx-comments==0.0.3
@@ -147,7 +147,7 @@ types-python-dateutil==2.9.0.20241003
 typing-extensions==4.12.2
 uri-template==1.3.0
 urllib3==2.2.3
-uvicorn==0.31.0
+uvicorn==0.31.1
 virtualenv==20.26.6
 watchfiles==0.24.0
 wcwidth==0.2.13
diff --git a/.constraints/py3.7.txt b/.constraints/py3.7.txt
deleted file mode 100644
index 7e7f834..0000000
--- a/.constraints/py3.7.txt
+++ /dev/null
@@ -1,164 +0,0 @@
-# This file was autogenerated by uv via the following command:
-#    uv pip compile pyproject.toml -o .constraints/py3.7.txt --all-extras --no-annotate --python-version=3.7 --no-emit-package setuptools
-accessible-pygments==0.0.4
-aiofiles==22.1.0
-aiosqlite==0.19.0
-alabaster==0.7.13
-anyio==3.7.1
-argon2-cffi==23.1.0
-argon2-cffi-bindings==21.2.0
-arrow==1.2.3
-attrs==24.2.0
-babel==2.14.0
-backcall==0.2.0
-beautifulsoup4==4.12.3
-bleach==6.0.0
-cached-property==1.5.2
-cachetools==5.5.0
-certifi==2024.8.30
-cffi==1.15.1
-cfgv==3.3.1
-chardet==5.2.0
-charset-normalizer==3.3.2
-click==8.1.7
-colorama==0.4.6
-comm==0.1.4
-cycler==0.11.0
-debugpy==1.7.0
-decorator==5.1.1
-defusedxml==0.7.1
-distlib==0.3.8
-docutils==0.17.1
-entrypoints==0.4
-exceptiongroup==1.2.2
-fastjsonschema==2.20.0
-filelock==3.12.2
-fonttools==4.38.0
-fqdn==1.5.1
-greenlet==3.1.1
-identify==2.5.24
-idna==3.10
-imagesize==1.4.1
-importlib-metadata==6.7.0
-importlib-resources==5.12.0
-ipykernel==6.16.2
-ipython==7.34.0
-ipython-genutils==0.2.0
-ipywidgets==8.1.5
-isoduration==20.11.0
-jedi==0.19.1
-jinja2==3.1.4
-json5==0.9.16
-jsonpointer==3.0.0
-jsonschema==4.17.3
-jupyter-cache==0.5.0
-jupyter-client==7.4.9
-jupyter-core==4.12.0
-jupyter-events==0.6.3
-jupyter-server==1.24.0
-jupyter-server-fileid==0.9.3
-jupyter-server-ydoc==0.8.0
-jupyter-ydoc==0.2.5
-jupyterlab==3.6.8
-jupyterlab-code-formatter==3.0.2
-jupyterlab-pygments==0.2.2
-jupyterlab-server==2.24.0
-jupyterlab-widgets==3.0.13
-kiwisolver==1.4.5
-latexcodec==3.0.0
-livereload==2.7.0
-markdown-it-py==2.2.0
-markupsafe==2.1.5
-matplotlib==3.5.3
-matplotlib-inline==0.1.6
-mdit-py-plugins==0.3.5
-mdurl==0.1.2
-mistune==3.0.2
-myst-nb==0.17.2
-myst-parser==0.18.1
-nbclassic==1.1.0
-nbclient==0.5.13
-nbconvert==7.6.0
-nbformat==5.8.0
-nest-asyncio==1.6.0
-nodeenv==1.9.1
-notebook==6.5.7
-notebook-shim==0.2.4
-numpy==1.21.6
-packaging==24.0
-pandocfilters==1.5.1
-parso==0.8.4
-pexpect==4.9.0
-pickleshare==0.7.5
-pillow==9.5.0
-pkgutil-resolve-name==1.3.10
-platformdirs==4.0.0
-pluggy==1.2.0
-pre-commit==2.21.0
-prometheus-client==0.17.1
-prompt-toolkit==3.0.48
-psutil==6.0.0
-ptyprocess==0.7.0
-pybtex==0.24.0
-pybtex-docutils==1.0.3
-pycparser==2.21
-pydata-sphinx-theme==0.13.3
-pygments==2.17.2
-pyparsing==3.1.4
-pyproject-api==1.5.3
-pyrsistent==0.19.3
-python-dateutil==2.9.0.post0
-python-json-logger==2.0.7
-pytz==2024.2
-pyyaml==6.0.1
-pyzmq==26.2.0
-requests==2.31.0
-rfc3339-validator==0.1.4
-rfc3986-validator==0.1.1
-ruff==0.6.9
-send2trash==1.8.3
-six==1.16.0
-sniffio==1.3.1
-snowballstemmer==2.2.0
-soupsieve==2.4.1
-sphinx==5.3.0
-sphinx-api-relink==0.0.9
-sphinx-autobuild==2021.3.14
-sphinx-book-theme==1.0.1
-sphinx-comments==0.0.3
-sphinx-copybutton==0.5.2
-sphinx-design==0.4.1
-sphinx-pybtex-etal-style==0.0.2
-sphinx-thebe==0.2.1
-sphinx-togglebutton==0.3.2
-sphinxcontrib-applehelp==1.0.2
-sphinxcontrib-bibtex==2.6.3
-sphinxcontrib-devhelp==1.0.2
-sphinxcontrib-htmlhelp==2.0.0
-sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-qthelp==1.0.3
-sphinxcontrib-serializinghtml==1.1.5
-sqlalchemy==1.4.54
-tabulate==0.9.0
-terminado==0.17.1
-tinycss2==1.2.1
-tomli==2.0.1
-tornado==6.2
-tox==4.8.0
-traitlets==5.9.0
-typing-extensions==4.7.1
-uri-template==1.3.0
-urllib3==2.0.7
-virtualenv==20.26.6
-wcwidth==0.2.13
-webcolors==1.13
-webencodings==0.5.1
-websocket-client==1.6.1
-wheel==0.42.0
-widgetsnbextension==4.0.13
-y-py==0.6.2
-ypy-websocket==0.8.4
-zipp==3.15.0
-
-# The following packages were excluded from the output:
-# setuptools
diff --git a/.constraints/py3.8.txt b/.constraints/py3.8.txt
deleted file mode 100644
index bc3efab..0000000
--- a/.constraints/py3.8.txt
+++ /dev/null
@@ -1,167 +0,0 @@
-# This file was autogenerated by uv via the following command:
-#    uv pip compile pyproject.toml -o .constraints/py3.8.txt --all-extras --no-annotate --python-version=3.8 --no-emit-package setuptools
-accessible-pygments==0.0.4
-alabaster==0.7.13
-anyio==4.5.0
-argon2-cffi==23.1.0
-argon2-cffi-bindings==21.2.0
-arrow==1.3.0
-asttokens==2.4.1
-async-lru==2.0.4
-attrs==24.2.0
-babel==2.16.0
-backcall==0.2.0
-beautifulsoup4==4.12.3
-bleach==6.1.0
-cachetools==5.5.0
-certifi==2024.8.30
-cffi==1.17.1
-cfgv==3.4.0
-chardet==5.2.0
-charset-normalizer==3.3.2
-click==8.1.7
-colorama==0.4.6
-comm==0.2.2
-contourpy==1.1.1
-cycler==0.12.1
-debugpy==1.8.6
-decorator==5.1.1
-defusedxml==0.7.1
-distlib==0.3.8
-docutils==0.17.1
-exceptiongroup==1.2.2
-executing==2.1.0
-fastjsonschema==2.20.0
-filelock==3.16.1
-fonttools==4.54.1
-fqdn==1.5.1
-greenlet==3.1.1
-h11==0.14.0
-httpcore==1.0.6
-httpx==0.27.2
-identify==2.6.1
-idna==3.10
-imagesize==1.4.1
-importlib-metadata==8.5.0
-importlib-resources==6.4.5
-ipykernel==6.29.5
-ipython==8.12.3
-ipywidgets==8.1.5
-isoduration==20.11.0
-jedi==0.19.1
-jinja2==3.1.4
-json5==0.9.25
-jsonpointer==3.0.0
-jsonschema==4.23.0
-jsonschema-specifications==2023.12.1
-jupyter-cache==0.6.1
-jupyter-client==8.6.3
-jupyter-core==5.7.2
-jupyter-events==0.10.0
-jupyter-lsp==2.2.5
-jupyter-server==2.14.2
-jupyter-server-terminals==0.5.3
-jupyterlab==4.2.5
-jupyterlab-code-formatter==3.0.2
-jupyterlab-pygments==0.3.0
-jupyterlab-server==2.27.3
-jupyterlab-widgets==3.0.13
-kiwisolver==1.4.7
-latexcodec==3.0.0
-livereload==2.7.0
-markdown-it-py==2.2.0
-markupsafe==2.1.5
-matplotlib==3.7.5
-matplotlib-inline==0.1.7
-mdit-py-plugins==0.3.5
-mdurl==0.1.2
-mistune==3.0.2
-myst-nb==0.17.2
-myst-parser==0.18.1
-nbclient==0.7.4
-nbconvert==7.16.4
-nbformat==5.10.4
-nest-asyncio==1.6.0
-nodeenv==1.9.1
-notebook-shim==0.2.4
-numpy==1.24.4
-overrides==7.7.0
-packaging==24.1
-pandocfilters==1.5.1
-parso==0.8.4
-pexpect==4.9.0
-pickleshare==0.7.5
-pillow==10.4.0
-pkgutil-resolve-name==1.3.10
-platformdirs==4.3.6
-pluggy==1.5.0
-pre-commit==3.5.0
-prometheus-client==0.21.0
-prompt-toolkit==3.0.48
-psutil==6.0.0
-ptyprocess==0.7.0
-pure-eval==0.2.3
-pybtex==0.24.0
-pybtex-docutils==1.0.3
-pycparser==2.22
-pydata-sphinx-theme==0.14.4
-pygments==2.18.0
-pyparsing==3.1.4
-pyproject-api==1.8.0
-python-dateutil==2.9.0.post0
-python-json-logger==2.0.7
-pytz==2024.2
-pyyaml==6.0.2
-pyzmq==26.2.0
-referencing==0.35.1
-requests==2.32.3
-rfc3339-validator==0.1.4
-rfc3986-validator==0.1.1
-rpds-py==0.20.0
-ruff==0.6.9
-send2trash==1.8.3
-six==1.16.0
-sniffio==1.3.1
-snowballstemmer==2.2.0
-soupsieve==2.6
-sphinx==5.3.0
-sphinx-api-relink==0.0.9
-sphinx-autobuild==2021.3.14
-sphinx-book-theme==1.0.1
-sphinx-comments==0.0.3
-sphinx-copybutton==0.5.2
-sphinx-design==0.5.0
-sphinx-pybtex-etal-style==0.0.2
-sphinx-thebe==0.3.1
-sphinx-togglebutton==0.3.2
-sphinxcontrib-applehelp==1.0.4
-sphinxcontrib-bibtex==2.6.3
-sphinxcontrib-devhelp==1.0.2
-sphinxcontrib-htmlhelp==2.0.1
-sphinxcontrib-jsmath==1.0.1
-sphinxcontrib-qthelp==1.0.3
-sphinxcontrib-serializinghtml==1.1.5
-sqlalchemy==2.0.35
-stack-data==0.6.3
-tabulate==0.9.0
-terminado==0.18.1
-tinycss2==1.3.0
-tomli==2.0.2
-tornado==6.4.1
-tox==4.21.2
-traitlets==5.14.3
-types-python-dateutil==2.9.0.20241003
-typing-extensions==4.12.2
-uri-template==1.3.0
-urllib3==2.2.3
-virtualenv==20.26.6
-wcwidth==0.2.13
-webcolors==24.8.0
-webencodings==0.5.1
-websocket-client==1.8.0
-wheel==0.44.0
-widgetsnbextension==4.0.13
-zipp==3.20.2
-
-# The following packages were excluded from the output:
-# setuptools
diff --git a/.constraints/py3.9.txt b/.constraints/py3.9.txt
index 7c52f22..3ef85ea 100644
--- a/.constraints/py3.9.txt
+++ b/.constraints/py3.9.txt
@@ -17,16 +17,16 @@ certifi==2024.8.30
 cffi==1.17.1
 cfgv==3.4.0
 chardet==5.2.0
-charset-normalizer==3.3.2
+charset-normalizer==3.4.0
 click==8.1.7
 colorama==0.4.6
 comm==0.2.2
 contourpy==1.3.0
 cycler==0.12.1
-debugpy==1.8.6
+debugpy==1.8.7
 decorator==5.1.1
 defusedxml==0.7.1
-distlib==0.3.8
+distlib==0.3.9
 docutils==0.21.2
 exceptiongroup==1.2.2
 executing==2.1.0
@@ -52,7 +52,7 @@ jinja2==3.1.4
 json5==0.9.25
 jsonpointer==3.0.0
 jsonschema==4.23.0
-jsonschema-specifications==2023.12.1
+jsonschema-specifications==2024.10.1
 jupyter-cache==1.0.0
 jupyter-client==8.6.3
 jupyter-core==5.7.2
@@ -68,7 +68,7 @@ jupyterlab-widgets==3.0.13
 kiwisolver==1.4.7
 latexcodec==3.0.0
 markdown-it-py==3.0.0
-markupsafe==2.1.5
+markupsafe==3.0.1
 matplotlib==3.9.2
 matplotlib-inline==0.1.7
 mdit-py-plugins==0.4.2
@@ -91,7 +91,7 @@ pexpect==4.9.0
 pillow==10.4.0
 platformdirs==4.3.6
 pluggy==1.5.0
-pre-commit==4.0.0
+pre-commit==4.0.1
 prometheus-client==0.21.0
 prompt-toolkit==3.0.48
 psutil==6.0.0
@@ -120,7 +120,7 @@ sniffio==1.3.1
 snowballstemmer==2.2.0
 soupsieve==2.6
 sphinx==7.4.7
-sphinx-api-relink==0.0.9
+sphinx-api-relink==0.0.10
 sphinx-autobuild==2024.10.3
 sphinx-book-theme==1.1.3
 sphinx-comments==0.0.3
@@ -150,7 +150,7 @@ types-python-dateutil==2.9.0.20241003
 typing-extensions==4.12.2
 uri-template==1.3.0
 urllib3==2.2.3
-uvicorn==0.31.0
+uvicorn==0.31.1
 virtualenv==20.26.6
 watchfiles==0.24.0
 wcwidth==0.2.13
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 8e1f8f8..0af3b3d 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -61,6 +61,7 @@
   "ruff.importStrategy": "fromEnvironment",
   "ruff.organizeImports": true,
   "search.exclude": {
+    "**/.constraints/py*.txt": true,
     "**/tests/**/__init__.py": true,
     "*/tox.ini": true
   },
diff --git a/docs/conf.py b/docs/conf.py
index 08473c6..3b104c8 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -76,6 +76,7 @@
 linkcheck_anchors = False
 linkcheck_ignore = [
     "http://code.ihep.ac.cn/redeboer/IniSelect",
+    "http://polywww.in2p3.fr",
     "http://www.cmtsite.net",
     "https://dayabay.bnl.gov",
     "https://github.com/redeboer/BOSS_IniSelect_ORIGINAL",
diff --git a/docs/tutorials/getting-started/intro.md b/docs/tutorials/getting-started/intro.md
index f103f60..28c6aa7 100644
--- a/docs/tutorials/getting-started/intro.md
+++ b/docs/tutorials/getting-started/intro.md
@@ -91,8 +91,6 @@ control system comparable to Subversion and Git.
 
 More information:
 
-- [An accessible introduction to CVS](http://polywww.in2p3.fr/activites/physique/glast/workbook/pages/softwareOverview/cvsBasics.htm)
-
-- [Commonly used CVS commands](http://polywww.in2p3.fr/activites/physique/glast/workbook/pages/softwareOverview/commonCVScommands.htm)
-
+- [An accessible introduction to CVS](https://www.gnu.org/software/trans-coord/manual/cvs/html_node/index.html)
+- [Commonly used CVS commands](https://www.gnu.org/software/trans-coord/manual/cvs/html_node/CVS-commands.html)
 - [Wikipedia on CVS](https://en.wikipedia.org/wiki/Concurrent_Versions_System)
diff --git a/pyproject.toml b/pyproject.toml
index 4f3c4b5..8fd56aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,8 +17,6 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
-    "Programming Language :: Python :: 3.7",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python",
     "Topic :: Scientific/Engineering :: Physics",
@@ -36,7 +34,7 @@ keywords = [
 ]
 license = {text = "GPLv3 or later"}
 name = "bossdoc"
-requires-python = ">=3.7"
+requires-python = ">=3.9"
 
 [project.optional-dependencies]
 dev = [