chore(release): v0.19.0

changes/udp-datagrams.md

@@ -1,9 +0,0 @@
-bump: minor
-type: feat
-`Udp.*`: polled IPv4 datagrams - the transport under a game's own netcode. `Udp.open(port)`
-binds a non-blocking socket (port 0 picks one, `Udp.port` says which), `Udp.send` sends one
-datagram to an address and port, and `Udp.recv` drains what arrived without ever blocking;
-`Udp.from_ip` / `Udp.from_port` name the sender. `Udp.ip` / `Udp.ip_text` convert addresses,
-`Udp.resolve` looks a host name up and `Udp.local_ip` is the address a player on the same
-network would dial. BSD sockets on macOS (`runtime/native/udp.ll`), Winsock on Windows
-(`udp_win.ll`, linked with ws2_32), linked only into a program that uses `Udp.*`.