Added support for Sphinx 3.5

CHANGELOG.rst

@@ -11,6 +11,7 @@ Features
 
 * `#267 <https://github.com/readthedocs/sphinx-autoapi/issues/267>`
   Expandable value for multi-line string attributes.
+* Added support for Sphinx 3.5.
 
 Trivial/Internal Changes
 ^^^^^^^^^^^^^^^^^^^^^^^^

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{36,37,38,39}-sphinx{30,31,32,33,34}
+    py{36,37,38,39}-sphinx{30,31,32,33,34,35}
     formatting
     lint
     docs
@@ -26,6 +26,7 @@ deps = -r{toxinidir}/requirements.txt
     sphinx32: Sphinx<3.3
     sphinx33: Sphinx<3.4
     sphinx34: Sphinx<3.5
+    sphinx35: Sphinx<3.6
 commands =
     pytest {posargs}