Glasgow Embedded / Glasgow - History

hardware.assembly: claim all interfaces before pipelining IN requests.

Claiming an interface on Windows resets all of the sibling interfaces.
It is probably not possible to make `.detach()` work properly without
a lot of additional work.

applet.interface.uart: fix `--stream` option handling.

applet.interface.jtag_xvc: fix `--frequency` option help.

gateware.uart: fix parity computation

Iteration over a `Shape` has not been a thing since Amaranth 0.4,
causing a `TypeError` when setting up non-constant parity. Use the
reduction XOR operator instead of hand-rolling the parity computation.

Tested that both odd and even parity work, and that mismatched settings
generate receive errors, when listening to an FT232R on macOS running
CoolTerm. Tested also that a loopback connection works.

gateware.crc: add gateware for checksumming packet streams.