update readthedocs setup and dependencies

Author: dbu

.readthedocs.yaml

@@ -0,0 +1,13 @@
+version: 2
+
+sphinx:
+    configuration: conf.py
+
+# additional formats
+formats:
+    - pdf
+
+python:
+    version: "3.7"
+    install:
+        - requirements: requirements.txt

Pipfile

@@ -7,11 +7,11 @@ verify_ssl = true
 
 [packages]
 sphinx-php = {git = "https://github.com/fabpot/sphinx-php.git"}
-sphinx-rtd-theme = "==0.1.6"
-sphinxcontrib-spelling = "==4.2.0"
-pyenchant = "~=2.0"
-docutils = "==0.12"
-Sphinx = "~=1.4.0"
+sphinx-rtd-theme = "==1.0.0"
+sphinxcontrib-spelling = "~=7.2.0"
+pyenchant = "~=3.2.1"
+docutils = "==0.17"
+Sphinx = "~=4.2.0"
 
 [requires]
 python_version = "3.7"

requirements.txt

@@ -1,6 +1,6 @@
 git+https://github.com/fabpot/sphinx-php.git#egg=sphinx-php
-sphinx~=1.4.0
-sphinx-rtd-theme==0.1.6
-sphinxcontrib-spelling==4.2.0
+sphinx~=4.2.0
+sphinx-rtd-theme==1.0.0
+sphinxcontrib-spelling~=7.2.0
 pyenchant
-docutils==0.12
+docutils==0.17