ocaml http/1, http/2 and websocket client and server library

chore: bump version to 0.3.0

Release highlights:
- Security: enforce max_body_size, read/write timeouts in h1/h2 servers
- Security: lock-free buffer pooling via Kcas
- Security: cryptographically secure random for CSRF, sessions, tokens
- Security: constant-time auth comparison, WebSocket origin validation
- Deps: add bytesrw, kcas_data, climate to dune-project
- CI: add Dagger pipeline with Python SDK (works with Podman)

Changed files
+2 -2
+1 -1
dune-project
··· 2 2 3 3 (name hcs) 4 4 5 - (version 0.2.1) 5 + (version 0.3.0) 6 6 7 7 (generate_opam_files true) 8 8
+1 -1
hcs.opam
··· 1 1 # This file is generated by dune, edit dune-project instead 2 2 opam-version: "2.0" 3 - version: "0.2.1" 3 + version: "0.3.0" 4 4 synopsis: "Eio based HTTP client/server library for OCaml 5+" 5 5 description: 6 6 "HCS is a HTTP client/server library for OCaml 5+ supporting HTTP/1.1, HTTP/2, and WebSocket. Built on Eio."