Add top-level function shortcuts for classmethods

README.md

@@ -21,6 +21,19 @@ from parametrization import Parametrization
 def test_somthing(actual, expected):
     assert actual == expected
 ```
+
+### Shortcuts
+```python
+from parametrization import case, parameters
+
+@parameters("actual", "expected")
+@case(name="some_case_0", actual=1, expected=2)
+@case("some_case_1", actual=1, expected=2)
+@case("some_case_2", 1, expected=1)
+def test_somthing(actual, expected):
+    assert actual == expected
+```
+
 ### Auto-detect parameters
 ```python
 from parametrization import Parametrization

parametrization.py

@@ -3,7 +3,8 @@
 from collections import namedtuple as _namedtuple
 
 __all__ = [
-    'Parametrization'
+    'Parametrization', 'parameters', 'autodetect_parameters', 'name_factory',
+    'case', 'default_parameters', 'legacy_cases',
 ]
 
 
@@ -131,3 +132,11 @@ def decorator(f):
             return parametrization
 
         return decorator
+
+
+parameters = Parametrization.parameters
+autodetect_parameters = Parametrization.autodetect_parameters
+name_factory = Parametrization.name_factory
+case = Parametrization.case
+default_parameters = Parametrization.default_parameters
+legacy_cases = Parametrization.legacy_cases