Merge pull request #560 from fxamacker/fxamacker/update-readme-for-v2…

….7.0

Update README.md for v2.7.0 release

README.md

@@ -6,9 +6,9 @@
 
 CBOR is a [trusted alternative](https://www.rfc-editor.org/rfc/rfc8949.html#name-comparison-of-other-binary-) to JSON, MessagePack, Protocol Buffers, etc.  CBOR is an Internet Standard defined by [IETF STD 94 (RFC 8949)](https://www.rfc-editor.org/info/std94) and is designed to be relevant for decades.
 
-`fxamacker/cbor` is used in projects by Arm Ltd., Cisco, Dapper Labs, EdgeX Foundry, Fraunhofer‑AISEC, Let's Encrypt (ISRG), Linux Foundation, Microsoft, Mozilla, Oasis Protocol, Tailscale, Teleport, [and others](https://github.com/fxamacker/cbor#who-uses-fxamackercbor).
+`fxamacker/cbor` is used in projects by Arm Ltd., Cisco, EdgeX Foundry, Flow Foundation, Fraunhofer‑AISEC, Kubernetes, Let's Encrypt (ISRG), Linux Foundation, Microsoft, Mozilla, Oasis Protocol, Tailscale, Teleport, [etc](https://github.com/fxamacker/cbor#who-uses-fxamackercbor).
 
-See [Quick Start](#quick-start) and [Releases](https://github.com/fxamacker/cbor/releases/).  🆕 `UnmarshalFirst` and `DiagnoseFirst` can decode CBOR Sequences.
+See [Quick Start](#quick-start) and [Releases](https://github.com/fxamacker/cbor/releases/).  🆕 `UnmarshalFirst` and `DiagnoseFirst` can decode CBOR Sequences.  `cbor.MarshalToBuffer()` and `UserBufferEncMode` accepts user-specified buffer.
 
 ## fxamacker/cbor
 
@@ -241,6 +241,9 @@ err = cbor.Unmarshal(b, &v)     // decode []byte b to v
 decoder = cbor.NewDecoder(r)    // create decoder with io.Reader r
 err = decoder.Decode(&v)        // decode a CBOR data item to v
 
+// v2.7.0 added MarshalToBuffer() and UserBufferEncMode interface.
+err = cbor.MarshalToBuffer(v, b) // encode v to b instead of using built-in buf pool.
+
 // v2.5.0 added new functions that return remaining bytes.
 
 // UnmarshalFirst decodes first CBOR data item and returns remaining bytes.
@@ -296,6 +299,17 @@ err := encoder.Encode(v)           // encode v to io.Writer w
 
 Default mode and custom modes automatically apply struct tags.
 
+### User Specified Buffer for Encoding (v2.7.0)
+
+`UserBufferEncMode` interface extends `EncMode` interface to add `MarshalToBuffer()`. It accepts a user-specified buffer instead of using built-in buffer pool.
+
+```Go
+em, err := myEncOptions.UserBufferEncMode() // create UserBufferEncMode mode
+
+var buf bytes.Buffer
+err = em.MarshalToBuffer(v, &buf) // encode v to provided buf
+```
+
 ### Struct Tags
 
 Struct tags (`toarray`, `keyasint`, `omitempty`) reduce encoded size of structs.
@@ -458,12 +472,14 @@ Default limits may need to be increased for systems handling very large data (e.
 
 ## Status
 
-v2.6.0 (February 2024) adds important new features, optimizations, and bug fixes. It is especially useful to systems that need to convert data between CBOR and JSON.  New options and optimizations improve handling of bignum, integers, maps, and strings.
+v2.7.0 (June 23, 2024) adds features and improvements that help large projects (e.g. Kubernetes) use CBOR as an alternative to JSON and Protocol Buffers. Other improvements include speedups, improved memory use, bug fixes, new serialization options, etc.   It passed fuzz tests (5+ billion executions) and is production quality.
 
 For more details, see [release notes](https://github.com/fxamacker/cbor/releases).
 
 ### Prior Release
 
+[v2.6.0](https://github.com/fxamacker/cbor/releases/tag/v2.6.0) (February 2024) adds important new features, optimizations, and bug fixes. It is especially useful to systems that need to convert data between CBOR and JSON.  New options and optimizations improve handling of bignum, integers, maps, and strings.
+
 v2.5.0 was released on Sunday, August 13, 2023 with new features and important bug fixes.  It is fuzz tested and production quality after extended beta [v2.5.0-beta](https://github.com/fxamacker/cbor/releases/tag/v2.5.0-beta) (Dec 2022) -> [v2.5.0](https://github.com/fxamacker/cbor/releases/tag/v2.5.0) (Aug 2023).
 
 __IMPORTANT__:  👉 Before upgrading from v2.4 or older release, please read the notable changes highlighted in the release notes.  v2.5.0 is a large release with bug fixes to error handling for extraneous data in `Unmarshal`, etc. that should be reviewed before upgrading.
@@ -533,7 +549,7 @@ geomean                                                      2.782
 
 ## Who uses fxamacker/cbor
 
-`fxamacker/cbor` is used in projects by Arm Ltd., Berlin Institute of Health at Charité, Chainlink, Cisco, Confidential Computing Consortium, ConsenSys, Dapper Labs, EdgeX Foundry, F5, FIDO Alliance, Fraunhofer‑AISEC, Let's Encrypt (ISRG), Linux Foundation, Matrix.org, Microsoft, Mozilla, National Cybersecurity Agency of France (govt), Netherlands (govt), Oasis Protocol, Smallstep, Tailscale, Taurus SA, Teleport, TIBCO, and others.
+`fxamacker/cbor` is used in projects by Arm Ltd., Berlin Institute of Health at Charité, Chainlink, Cisco, Confidential Computing Consortium, ConsenSys, Dapper Labs, EdgeX Foundry, F5, FIDO Alliance, Fraunhofer‑AISEC, Kubernetes, Let's Encrypt (ISRG), Linux Foundation, Matrix.org, Microsoft, Mozilla, National Cybersecurity Agency of France (govt), Netherlands (govt), Oasis Protocol, Smallstep, Tailscale, Taurus SA, Teleport, TIBCO, and others.
 
 `fxamacker/cbor` passed multiple confidential security assessments.  A [nonconfidential security assessment](https://github.com/veraison/go-cose/blob/v1.0.0-rc.1/reports/NCC_Microsoft-go-cose-Report_2022-05-26_v1.0.pdf) (prepared by NCC Group for Microsoft Corporation) includes a subset of fxamacker/cbor v2.4.0 in its scope.
 
@@ -656,6 +672,8 @@ I'm especially grateful to Bastian Müller and Dieter Shirley for suggesting and
 
 I'm very grateful to Stefan Tatschner, Yawning Angel, Jernej Kos, x448, ZenGround0, and Jakob Borg for their contributions or support in the very early days.
 
+Big thanks to Ben Luddy for his contributions in v2.6.0 and v2.7.0.
+
 This library clearly wouldn't be possible without Carsten Bormann authoring CBOR RFCs.
 
 Special thanks to Laurence Lundblade and Jeffrey Yasskin for their help on IETF mailing list or at [7049bis](https://github.com/cbor-wg/CBORbis).