Bumped version to v0.0.8, new CHANGELOG, added CHANGELOG entry

CHANGELOG.md

@@ -0,0 +1,36 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+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).
+
+## [0.0.8] - 2020-05-27
+
+This is a maintenance release with dependency and CI updates together with 
+some coder modernization changes.
+
+Changes from PR [#23](https://github.com/ethereumjs/ethashjs/pull/23):
+
+- Upgraded CI from travis to GH Actions
+- Node versions tested updated from [4, 5] to [10, 12, 13, 14]
+- Upgraded dev deps (ethereumjs-block, nyc, standard)
+- Added `ethash_tests.json` to test dir and removes ethereumjs-testing dep
+- Use single imports for ethereumjs-util, upgrades to v7.0.2
+- Modernizes buffer init syntax
+
+Further/preceeding dependency updates in
+PR [#19](https://github.com/ethereumjs/ethashjs/pull/19),
+PR [#11](https://github.com/ethereumjs/ethashjs/pull/11),
+PR [#8](https://github.com/ethereumjs/ethashjs/pull/8) and
+PR [#7](https://github.com/ethereumjs/ethashjs/pull/7)
+
+[0.0.8]: https://github.com/ethereumjs/ethashjs/compare/v0.0.7...v0.0.8
+
+## Older releases:
+
+- [0.0.7](https://github.com/ethereumjs/ethashjs/compare/v0.0.6...v0.0.7) - 2016-05-01
+- [0.0.6](https://github.com/ethereumjs/ethashjs/compare/v0.0.5...v0.0.6) - 2016-01-08
+- [0.0.5](https://github.com/ethereumjs/ethashjs/compare/v0.0.4...v0.0.5) - 2015-11-27
+- 0.0.4 - 2015-10-01

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ethashjs",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "description": "an ethash implementation in JS",
   "main": "index.js",
   "directories": {