Readme and copyright updates (#220)

Update the README for 1.3

Co-authored-by: Laurence Lundblade <[email protected]>

README.md

@@ -3,7 +3,7 @@
 **QCBOR** is a powerful, commercial-quality CBOR encoder/decoder that
 implements these RFCs:
 
-* [RFC8949](https://tools.ietf.org/html/rfc8949) The CBOR Standard. (Everything
+* [RFC8949](https://tools.ietf.org/html/rfc8949) The CBOR Standard. (Nearly everything
 except sorting of encoded maps)
 * [RFC7049](https://tools.ietf.org/html/rfc7049) The previous CBOR standard.
 Replaced by RFC 8949.
@@ -168,11 +168,14 @@ QCBOR.
 
 ## Code Status
 
-The current version is v1.1, a small feature addition and bug fix
-release over QCBOR 1.0.
+The official current release is version 1.3. Changes over the last few
+years have been only minor bug fixes, minor feature additions and
+documentation improvements. QCBOR 1.x is highly stable.
 
-Code has been stable for over a year. The last major change was in
-fall of 2020.
+Work on some larger feature additions is ongoing in "dev" branch.
+This includes more explicit support for preferred serialization and
+CDE (CBOR Deterministic Encoding).  It will eventually be release as
+QCBOR 2.x.
 
 QCBOR was originally developed by Qualcomm. It was [open sourced
 through CAF](https://source.codeaurora.org/quic/QCBOR/QCBOR/) with a

inc/qcbor/qcbor_common.h

@@ -1,6 +1,6 @@
 /* ==========================================================================
  * Copyright (c) 2016-2018, The Linux Foundation.
- * Copyright (c) 2018-2023, Laurence Lundblade.
+ * Copyright (c) 2018-2024, Laurence Lundblade.
  * Copyright (c) 2021, Arm Limited.
  * All rights reserved.
  *

inc/qcbor/qcbor_private.h

@@ -1,6 +1,6 @@
 /* ==========================================================================
  * Copyright (c) 2016-2018, The Linux Foundation.
- * Copyright (c) 2018-2023, Laurence Lundblade.
+ * Copyright (c) 2018-2024, Laurence Lundblade.
  * Copyright (c) 2021, Arm Limited.
  * All rights reserved.
  *