Merge pull request #769 from StingraySoftware/use_readthedocs

Use readthedocs

.readthedocs.yaml

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+# Read the Docs configuration file for Sphinx projects
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+# Required
+version: 2
+
+# Set the OS, Python version and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
+
+# Build documentation in the "docs/" directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+  # You can configure Sphinx to use a different builder, for instance use the dirhtml builder for simpler URLs
+  # builder: "dirhtml"
+  # Fail on all warnings to avoid broken references
+  # fail_on_warning: true
+
+# Optionally build your docs in additional formats such as PDF and ePub
+formats:
+   - pdf
+   - epub
+
+# Optional but recommended, declare the Python requirements required
+# to build your documentation
+# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+python:
+   install:
+   - requirements: docs/requirements.txt

docs/changes/769.trivial.rst

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+Use Readthedocs for documentation building

docs/requirements.txt

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+jinja2<=3.0.0
+docutils
+sphinx-astropy
+nbsphinx>=0.8.3,!=0.8.8
+pandoc
+ipython
+towncrier<22.12.0