david/shared

david 550157111f Added `cast_into` feature for Data		6 月之前
..
collection_data_example.rs	550157111f Added `cast_into` feature for Data	6 月之前
data_example.rs	e792ec617c Expanded shared for Shared and Data	6 月之前
doc_example.rs	3318ad6474 Adds a complete example, and some doctest/examples	7 月之前