test made pd-version-aware; remove setup.py; make testenvs vary pd version use

Author: robin900

setup.py

@@ -172,9 +172,10 @@ def test_skiprows(self):
         self.assertEqual(len(df), 6)
 
     def test_squeeze(self):
-        df = get_as_dataframe(self.sheet, usecols=[0], squeeze=True)
-        self.assertTrue(isinstance(df, pd.Series))
-        self.assertEqual(len(df), 9)
+        if pd.__version__ < '2.0.0':
+            df = get_as_dataframe(self.sheet, usecols=[0], squeeze=True)
+            self.assertTrue(isinstance(df, pd.Series))
+            self.assertEqual(len(df), 9)
 
     def test_converters_datetime(self):
         df = get_as_dataframe(

tests/gspread_dataframe_test.py

@@ -10,9 +10,10 @@ package = wheel
 wheel_build_env = .pkg
 deps =
     pytest>=6
-    pandas<2.0.0
     coverage
     oauth2client
+    !3.8: pandas>=2.0.0
+    3.8: pandas<2.0.0
 commands = 
   coverage erase
   coverage run -m pytest {tty:--color=yes} tests/gspread_dataframe_test.py tests/gspread_dataframe_integration.py {posargs}