Gaoxy v0.15.2

Gaoxy 0.15.2

• #22: refresh the supported
  Abyss/Hell dependency constraints and lock the HTTP/TLS/QUIC cohort at
  1.0.0-rc.9, including the Phoenix example. Consumers can update without
  dependency overrides. No DATAGRAM or WebTransport capability is added.
• #23: accept the boolean
  hell_options: [transport_options: [ipv6_v6only: false]] for explicit IPv6
  wildcard dual-stack TCP/TLS, HTTP/HTTPS, ListenerSet and Phoenix listeners.
  true enables IPv6-only operation. Existing TLS client-certificate policies
  remain unchanged; platform socket support still applies.
• #24: expose validated, finite
  limits and http_limits through Gaoxy.Test.open/1 for all supported
  profiles. Larger fixture bodies can use an explicitly sufficient service
  budget while retaining body limits, default settings, request journaling,
  ownership and verification.

Regression coverage includes real IPv4/IPv6 listener behavior and complete
multilingual request bodies. Requesting applications perform their own
downstream runtime and integration acceptance after updating.