more doc tweaks, update js json

Author: parrt

README.md

@@ -8,10 +8,15 @@
 
 **Build status**
 
-[![Github CI Build Status (MacOSX)](https://img.shields.io/github/workflow/status/antlr/antlr4/MacOSX?label=MacOSX)](https://github.com/antlr/antlr4/actions) 
+[![Github CI Build Status (MacOSX)](https://img.shields.io/github/workflow/status/antlr/antlr4/MacOSX)](https://github.com/antlr/antlr4/actions) 
+[![Github CI Build Status (Windows)](https://img.shields.io/github/workflow/status/antlr/antlr4/Windows)](https://github.com/antlr/antlr4/actions) 
+<!--
 [![AppVeyor CI Build Status (Windows)](https://img.shields.io/appveyor/build/parrt/antlr4?label=Windows)](https://ci.appveyor.com/project/parrt/antlr4) 
+-->
 [![Circle CI Build Status (Linux)](https://img.shields.io/circleci/build/gh/antlr/antlr4/master?label=Linux)](https://app.circleci.com/pipelines/github/antlr/antlr4)
+<!--
 [![Travis-CI Build Status (Swift-Linux)](https://img.shields.io/travis/antlr/antlr4.svg?label=Linux-Swift&branch=master)](https://travis-ci.com/github/antlr/antlr4)
+-->
 
 ## Repo branch structure
 

doc/releasing-antlr.md

@@ -438,7 +438,6 @@ pub publish
 ```
 
 It will warn that no change log found for the new version.
-If there are changes relevant to dart in this release, edit [CHANGELOG.md](https://github.com/antlr/antlr4/blob/master/runtime/Dart/CHANGELOG.md) to describe the changes.
 Otherwise enter `N` to ignore the warning.
 
 ## Update website