Fix various warnings (#48)

* Fix pyarrow, hypothesis deprecation warnings
* Fix warning in test

Author: brl0

spatialpandas/geometry/base.py

@@ -130,11 +130,11 @@ def name(self):
 
 class Geometry:
     def __init__(self, data, dtype=None):
-        if isinstance(data, pa.ArrayValue):
-            # Use arrow ArrayValue as is
+        if isinstance(data, pa.Scalar):
+            # Use arrow Scalar as is
             self.data = data
         else:
-            # Convert to ArrayValue
+            # Convert to arrow Scalar
             self.data = pa.array([data])[0]
 
     def __repr__(self):

tests/geometry/test_construction.py

@@ -33,7 +33,7 @@ def test_construct_pointarray_tuple():
 
 
 def test_construct_pointarray_2d_with_None():
-    src_array = np.array([None, [2, 3], [4, 5], None])
+    src_array = np.array([None, [2, 3], [4, 5], None], dtype=object)
     expected_xs = np.array([np.nan, 2, 4, np.nan], dtype=np.float64)
     expected_ys = np.array([np.nan, 3, 5, np.nan], dtype=np.float64)