add reference to statham and schema version compatibility

README.md

@@ -26,4 +26,8 @@ person.birthday = datetime(1969, 11, 23)
 
 assert person.age == 53
 assert person.birthday == datetime(1969, 11, 23)
-```
+```
+
+## Compatibility
+
+For validating schemas Momoa depends on [Statham](https://statham-schema.readthedocs.io), which [supports](https://statham-schema.readthedocs.io/en/latest/compatibility.html) the [JSON Schema Draft 6 specification](https://json-schema.org/specification-links.html#draft-6).

docs/index.md

@@ -137,3 +137,7 @@ assert result.gender == "male"
 assert not result.deceased
 assert result.birthday is UNDEFINED
 ```
+
+## Compatibility
+
+For validating schemas Momoa depends on [Statham](https://statham-schema.readthedocs.io), which [supports](https://statham-schema.readthedocs.io/en/latest/compatibility.html) the [JSON Schema Draft 6 specification](https://json-schema.org/specification-links.html#draft-6).

pyproject.toml

@@ -9,12 +9,9 @@ authors = [
 ]
 requires-python = ">=3.8,<4.0"
 dependencies = [
-    "statham-schema<1.0.0,>=0.13.5",
-    "stringcase<2.0.0,>=1.2.0",
-    "python-dateutil<3.0.0,>=2.8.2",
-    "statham-schema<1.0.0,>=0.13.5",
-    "stringcase<2.0.0,>=1.2.0",
-    "python-dateutil<3.0.0,>=2.8.2",
+    "statham-schema>=0.13.5",
+    "stringcase>=1.2.0",
+    "python-dateutil>=2.8.2",
 ]
 
 [tool.pdm.build]

tox.ini

@@ -4,6 +4,9 @@ envlist = checks, py38, py39, py310, py311
 
 [testenv]
 skip_install = true
+pdm_sync = false
+groups =
+    test
 deps =
     pytest-cov
     mypy
@@ -13,6 +16,8 @@ commands =
     mypy --install-types --non-interactive momoa/
 
 [testenv:checks]
+groups =
+    checks
 commands =
     ruff momoa/
     black --check .