Fixed metaclass incompatibility to work with PyTorch 1.9.0.
0.1.3
`TensorType` now inherits from `torch.Tensor` so that IDE lookup+error messages work as expected. Updated pre-commit hooks. These were failing for some reason.
0.1.2
Added support for `str: str` pairs and `None: str` pairs.
0.1.1
Added support for Python 3.7+. (Down from Python 3.9+.) Added support for `typing.Any` to indicate an arbitrary-size dimension.