Changes in version 0.2.0                        

  - Added the DataType class hierarchy: BooleanType, IntegerType,
    UIntegerType, and FloatType with ==/!= comparison, print(), and
    as.character() methods.
  - Added as_dtype() generic to convert strings (e.g. "i32", "f64") to
    DataType objects.
  - Added is_dtype() and assert_dtype() helpers for type checking.
  - Added nelts() generic to get the number of elements of a tensor.
  - Renamed TensorDataType to DataType.

                        Changes in version 0.1.0                        

  - Initial release on r-universe