QST-86: prepare changelog v0.2.0.

GitOrigin-RevId: 068c1a5e24ce889e604ed500c40fd48204e28445

README.md

@@ -58,6 +58,16 @@ Contributors need to sign and send a Contributor License Agreement:
 * individuals need to sign [the Individual Contributor License Agreement](docs/cla/individual.pdf), and send it by email alongside their Github handle at `sandwich [at] sandboxaq.com`
 * corporate contributors need to sign [the Corporate Contributor License Agreement](docs/cla/corporate.pdf), and send it by email alongside their Github handle at `sandwich [at] sandboxaq.com`
 
+## Security
+
+The library has been security audited internally. Third party security audit
+was also conducted by an independent security research firm
+[Trail of Bits](https://www.trailofbits.com/).
+All bugs have been fixed and incorporated in this github repository.
+
+Please [contact us]([email protected]) for any security issues you
+may encounter in this software. Thanks!
+
 ## Disclaimer
 
 The software and documentation are provided "as is" and SandboxAQ hereby disclaims all warranties, whether express, implied, statutory, or otherwise.

docs/docs/CHANGELOG.md

@@ -1,5 +1,21 @@
 # Changelog
 
+## v0.2.0 (Feb 5, 2024)
+
+### Major changes
+
+ - Security fixes discovered by independent security research firm Trail of Bits.
+ - Support for OpenSSL 3.2.0 coupled with oqs-provider as a cryptographic backend.
+ - [Support for TLS 1.2](https://sandbox-quantum.github.io/sandwich/protobuf/api/v1/TLSv12Config.html)
+ - New APIs on top of OpenTelemetry which traces internal stages of a TLS connection along with data collection.
+
+### Minor changes
+
+ - Fix an issue where protobuf versions did not match.
+ - Update liboqs to its latest version to fix the `DIV` issue in Kyber implementation.
+ - Accept standard Rust IO.
+
+
 ## v0.1.0 (Aug 8, 2023)
 
 Initial public release