feat: add explicit API mode to whatsnew14.md (#1730)
feat: add explicit API mode to whatsnew14.md (#1730)

* feat: add explicit API mode to whatsnew14.md

* chore: added link to the KEEP about the explicit API mode
JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site