Upgrade OpenAPI to v3

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+# 4.0.0.rc1 [#128](https://github.com/openfisca/country-template/pull/128)
+
+#### New Features
+
+- Upgrade OpenAPI specification of the API to v3 from Swagger v2.
+- Continuously validate OpenAPI specification.
+
+#### Breaking changes
+
+- Drop support for OpenAPI specification v2 and prior.
+- Users relying on the aforesaid can use [this](https://converter.swagger.io/api/convert?url=OAS2_YAML_OR_JSON_URL) to migrate ([example](https://web.archive.org/web/20221103230822/https://converter.swagger.io/api/convert?url=https://api.demo.openfisca.org/latest/spec)).
+
 ### 3.13.2 - [#123](https://github.com/openfisca/country-template/pull/123)
 
 * Technical improvement.

setup.py

@@ -10,7 +10,7 @@
 
 setup(
     name = "OpenFisca-Country-Template",
-    version = "3.13.2",
+    version = "4.0.0.rc1",
     author = "OpenFisca Team",
     author_email = "[email protected]",
     classifiers = [
@@ -38,7 +38,7 @@
             ),
         ],
     install_requires = [
-        "OpenFisca-Core[web-api] >= 35.0.0, < 36.0.0",
+        "OpenFisca-Core[web-api] >= 36.0.0.rc1, < 37.0.0",
         ],
     extras_require = {
         "dev": [