1.12.3 (March 3, 2020)
buffer: force copy when appending small slices to OwnedImpl buffer to avoid fragmentation.
http: added HTTP/1.1 flood protection. Can be temporarily disabled using the runtime feature
listeners: fixed issue where TLS inspector listener filter could have been bypassed by a client using only TLS 1.3.
rbac: added url_path for matching URL path without the query and fragment string.
sds: fixed the SDS vulnerability that TLS validation context (e.g., subject alt name or hash) cannot be effectively validated in some cases.