update changelog for CAA support

CHANGELOG.md

@@ -12,6 +12,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Integration tests for Server to validate all supported DNSSec key types
 - Common features `dnssec-ring`, `dnssec-openssl`, and `dnssec` across all crates
 - Clarified `tls` feature with `tls-openssl`, and `tls` in server
+- Added support for rfc6844, CAA record types #234
 
 ### Changed
 

README.md

@@ -125,6 +125,7 @@ Zones will be automatically resigned on any record updates via dynamic DNS.
 - [RFC 5702](https://tools.ietf.org/html/rfc5702): SHA-2 Algorithms with RSA in DNSKEY and RRSIG for DNSSEC
 - [RFC 6698](https://tools.ietf.org/html/rfc6698): The DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS) Protocol: TLSA
 - [RFC 6840](https://tools.ietf.org/html/rfc6840): Clarifications and Implementation Notes for DNSSEC
+- [RFC 6844](https://tools.ietf.org/html/rfc6844): DNS Certification Authority Authorization Resource Record
 - [RFC 6944](https://tools.ietf.org/html/rfc6944): DNSKEY Algorithm Implementation Status
 - [RFC 6975](https://tools.ietf.org/html/rfc6975): Signaling Cryptographic Algorithm Understanding
 - [RFC 7858](https://tools.ietf.org/html/rfc7858): DNS over TLS