docs(changelog): notes about stencil/redux updates

CHANGELOG.md

@@ -122,6 +122,11 @@ The other change is the update to [TypeScript 4](https://devblogs.microsoft.com/
 * **watch:** remove deprecated PropWillChange/PropDidChange ([fa2b400](https://github.com/ionic-team/stencil/commit/fa2b400cf36696365487b7c2445ab096ee354e50))
 
 
+### Removal of `Context`
+
+The `Context` object was originally added in the `0.x.x` versions of Stencil, before ES Modules were widely adopted. Since then we've deprecated it in Stencil 1, and have ported any external libraries off of it. The remaining one was `@stencil/redux`, and we've released `0.2.0` to be used with Stencil 2 (and can also work with Stencil 1). Additionally, now might be a good time to look into using [@stencil/core](https://stenciljs.com/docs/stencil-store) instead.
+
+
 ### Bug Fixes
 
 * **assetsDirs:** allow same destination asset dir copy task ([b6379b3](https://github.com/ionic-team/stencil/commit/b6379b31da4fe40bf6251d307368d43e7ceee091)), closes [#2615](https://github.com/ionic-team/stencil/issues/2615)