docs: add changelog

CHANGELOG.md

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+<a name="v1.1.0"></a>
+## [v1.1.0] - 2021-02-09
+
+### Build
+- **jenkins:** jenkins build scripts for Windows and Ubuntu
+- add support for centos7 and 8
+- Use `-DNO_SELECT=ON` to work around select behavior on older distros
+- Use vcpkg for both linux and windows
+
+### Ci
+- update build
+- update build
+- add support for release or debug
+- add types for conventional commits
+- add ci for status checks
+
+### Docs
+- add release disclaimer
+
+### Fix
+- link status not reported correctly
+- free fqdn buffer
+
+### Feat
+- version update
+- Add `--nocertcheck`, `-n` args to skip websocket server certificate verification for all builds.
+- Add/update DNS Suffix (OS), Hostname (OS), fqdn [AMT] and DNS Suffix info returned by --amtinfo.
+
+<a name="v1.0.0"></a>
+## [v1.0.0] - 2020-11-20
+### Build
+- Add Github Actions Support
+