Add unique to stub file.

Author: jarthurgross

test/test_value_array.py

@@ -292,4 +292,4 @@ def test_unique() -> None:
     xs = np.array([3.7, 0.9, 0.9, 4.3, 3.7])
     unit = tu.MHz
     v_arr = xs * unit
-    assert np.array_equal(v_arr.unique(), np.unique(xs) * unit) 
+    assert np.array_equal(v_arr.unique(), np.unique(xs) * unit)

tunits/core/__init__.pyi

@@ -334,6 +334,7 @@ class ValueArray(Generic[ValueType2], WithUnit):
     def to_proto(self, msg: tunits_pb2.ValueArray | None = None) -> tunits_pb2.ValueArray: ...
     def __init__(self, data: Any, unit: Any = None) -> None: ...
     def allclose(self, other: ValueArray | Value, *args: Any, **kwargs: float) -> bool: ...
+    def unique(self) -> ValueArray: ...
     def __array__(self, dtype: DTypeLike = None) -> NDArray[Any]: ...
     def __array_wrap__(self, out_arr: NDArray[Any], context: Any = None) -> NDArray[Any]: ...
     def __copy__(self: ArrayType) -> ArrayType: ...