David Lechner a565811f23 extmod/modbtree: Use buffer protocol for keys/values.
This changes the btree implementation to use the buffer protocol for
reading key/values in all methods.  `str` and `bytes` objects are not the
only bytes-like objects that could be used.

Documentation and tests are also updated.

Addresses issue #8748.

Signed-off-by: David Lechner <david@pybricks.com>
2022-06-21 00:44:49 +10:00
..