To that effect, bump liberty and the xC relay protocol version.
Relay events have been reordered to improve forward compatibility.
Also prevent use-after-free when serialization fails.
xP now slightly throttles activity notifications,
and indicates when there are unacknowledged commands.
Rendering takes the current buffer into account,
so change its value before using it, not afterwards.
The order happened to not matter on at least Windows,
because we just queue a message.
This has been more of an exercise. The performance of Msftedit.dll
is rather abysmal, and its interface isn't the most accomodating.
That said, the frontend is quite usable, at least on Windows 10+.
