v0.7.0

Added

• An idl/ layer, which brings microser back as a message encoder for a
  channel's payload. microser.h is the runtime, a header-only reader and
  writer for tagged fields, and microser-gen.sh compiles an .idl file into
  a C struct with an encode and a decode function. The core still names neither
  a socket nor a serialiser: netchan moves opaque bytes, and this says what
  they mean.
• A dispatch table generated from the same .idl, so a program routes an
  incoming datagram to a typed handler instead of switching on a tag itself. A
  channel's content_type is the topic, read back from its OPEN, so a channel
  can be routed before a byte of payload is read.
• A manual, built by docs/build.sh into one self-contained page and deployed
  to GitHub Pages on a push to main. The prose is hand written, the API
  reference is generated from src/netchan.h, and check-symbols.sh fails the
  build if the prose calls a netchan_ function the header no longer declares.
  Diagrams are rendered to SVG at build time by mscgen and graphviz, with their
  colors swapped for currentColor so one file serves light and dark.

Fixed

• The IDL compiler folded two variant fields sharing a tag number into a single
  struct member, so a union that reused a number generated code that did not
  compile. Every variant field now gets its own member and its own decode case.
  The field-number check also compared only plain fields against each other, so
  a plain field colliding with a variant or with the discriminant reached the C
  compiler as a duplicate case value. The full field set is checked now, and a
  collision is reported by name.
• A generator run with no output base wrote empty .c and .h files. The
  guard was in BEGIN, where exit still runs END. It is in END now,
  where exit is terminal.
• The chat server polled a peer it had just freed.

Changed

• The IDL compiler and the API-reference generator moved out of shell
  single-quoted strings into microser-gen.awk and gen-api.awk, invoked with
  awk -f. Every apostrophe and quote in them was a quoting hazard, and one
  such apostrophe had already spilled part of the program to the shell. As
  ordinary source files they parse-check and pass gawk --lint. Generated
  output is unchanged. A vendored copy needs both files of each pair.

Vendoring

curl -fsSL https://raw.githubusercontent.com/OrangeTide/netchan/v0.7.0/tools/vendor.sh | sh -s -- --version v0.7.0

The source snapshot below is what that fetches. See
VENDORING.md.