Adds @slavik-lvovsky's contribution

Updates CHANGELOG

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 ### Fixed
 
+- Fixes [#1609](https://github.com/eamodio/vscode-gitlens/issues/1609) - X.globalState.setKeysForSync is not a function — thanks to [PR #1610](https://github.com/eamodio/vscode-gitlens/pull/1610) by Stanislav Lvovsky ([@slavik-lvovsky](https://github.com/slavik-lvovsky))
 - Fixes [#1131](https://github.com/eamodio/vscode-gitlens/issues/1131) - Order matters for search filters in 'search commits' — with help from [PR #1575](https://github.com/eamodio/vscode-gitlens/pull/1575) by Lior Kletter ([@Git-Lior](https://github.com/Git-Lior))
 - Fixes [#1583](https://github.com/eamodio/vscode-gitlens/issues/1583) - Should hide the context menu on unrelated tabs — thanks to [PR #1589](https://github.com/eamodio/vscode-gitlens/pull/1589) by Takashi Tamura ([@tamuratak](https://github.com/tamuratak))
 - Fixes [#1587](https://github.com/eamodio/vscode-gitlens/issues/1587) - Hover on blame can duplicate — thanks to [PR #1588](https://github.com/eamodio/vscode-gitlens/pull/1588) by Takashi Tamura ([@tamuratak](https://github.com/tamuratak))

README.md

@@ -1087,6 +1087,7 @@ A big thanks to the people that have contributed to this project:
 - Kwok ([@mankwok](https://github.com/mankwok)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=mankwok)
 - Marc Lasson ([@mlasson](https://github.com/mlasson)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=mlasson)
 - John Letey ([@johnletey](https://github.com/johnletey)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=johnletey)
+- Stanislav Lvovsky ([@slavik-lvovsky](https://github.com/slavik-lvovsky)) — [contributions]((https://github.com/eamodio/vscode-gitlens/commits?author=slavik-lvovsky)
 - Peng Lyu ([@rebornix](https://github.com/rebornix)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=rebornix)
 - Cédric Malard ([@cmalard](https://github.com/cmalard)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=cmalard)
 - Asif Kamran Malick ([@akmalick](https://github.com/akmalick)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=akmalick)