Merge pull request #922 from ethereumjs/beta.1-release

Beta.1 Releases

Author: holgerd77

packages/block/CHANGELOG.md

@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 (modification: no type change headlines) and this project adheres to
 [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## 3.0.0 - UNRELEASED
+## 3.0.0-beta.1 - 2020-10-22
 
 ### New Package Name
 
@@ -159,6 +159,17 @@ as an input parameter.
 The HF setting is now automatically taken from the HF set for `Common.DEAULT_HARDFORK`,
 see PR [#863](https://github.com/ethereumjs/ethereumjs-vm/pull/863).
 
+### Dual ES5 and ES2017 Builds
+
+We significantly updated our internal tool and CI setup along the work on 
+PR [#913](https://github.com/ethereumjs/ethereumjs-vm/pull/913) with an update to `ESLint` from `TSLint` 
+for code linting and formatting and the introduction of a new build setup.
+
+Packages now target `ES2017` for Node.js builds (the `main` entrypoint from `package.json`) and introduce
+a separate `ES5` build distributed along using the `browser` directive as an entrypoint, see
+PR [#921](https://github.com/ethereumjs/ethereumjs-vm/pull/921). This will result
+in performance benefits for Node.js consumers, see [here](https://github.com/ethereumjs/merkle-patricia-tree/pull/117) for a releated discussion.
+
 ### Other Changes
 
 **Features**