Results 3 issues of Oto Šťáva

This makes it so that when the horizontal margins sum up to a higher value than the total width of NeoVim, they get set to zero. Previously, the plugin would...

This commit adds an echo server that reflects queries back at the sender. May be used for determining the baseline performance of QUIC (or, at least, of the `quic-go` implementation...

Added DNS-over-QUIC, Oblivious DNS-over-HTTPS, and a few other RFCs that obsoleted some older ones (as reported by `convert`)