master
bugfix: fixed errors and warnings with C compilers without variadic macro support.
minor coding style fixes.
feature: add append mode for more_set_headers(so far just for Set-Cookie field).
optimize: set r->keepalive 0 to close connection.
bugfix: bound Content-Type charset parsing and reset per-header builtin flag
bugfix: update handling of multiple headers changed in nginx 1.23.0.
optimize: removed the unused C function ngx_http_headers_more_rm_header. thanks Markus Linnala for the catch in #28.