Update CHANGELOG.md with new patch versions.

Author: benjamn

CHANGELOG.md

@@ -1,16 +1,16 @@
 **Note:** This is a cumulative changelog that outlines all of the Apollo Client project child package changes that were bundled into a specific `apollo-client` release.
 
-## Apollo Client (vNEXT)
+## Apollo Client (2.6.1)
 
 - In all Apollo Client packages, the compilation of `lib/bundle.esm.js` to `lib/bundle.cjs.js` and `lib/bundle.umd.js` now uses Babel instead of Rollup, since Babel correctly compiles some [edge cases](https://github.com/apollographql/apollo-client/issues/4843#issuecomment-495717720) that neither Rollup nor TypeScript compile correctly. <br/>
   [@benjamn](https://github.com/benjamn) in [#4911](https://github.com/apollographql/apollo-client/pull/4911)
 
-### Apollo Cache In-Memory
+### Apollo Cache In-Memory 1.6.1
 
 - Pretend that `__typename` exists on the root Query when matching fragments. <br/>
   [@benjamn](https://github.com/benjamn) in [#4853](https://github.com/apollographql/apollo-client/pull/4853)
 
-### Apollo Utilities
+### Apollo Utilities 1.3.1
 
 - The `isEqual` function has been reimplemented using the `lodash.isequal` npm package, to better support circular references. Since the `lodash.isequal` package is already used by `react-apollo`, this change is likely to decrease total bundle size. <br/>
   [@capaj](https://github.com/capaj) in [#4915](https://github.com/apollographql/apollo-client/pull/4915)