update CHANGELOG

Author: georapbox

.travis.yml

@@ -2,7 +2,6 @@ language: node_js
 node_js:
   - '11'
   - '10'
-  - '8'
 branches:
   only:
     - master

CHAGELOG.md

@@ -2,7 +2,11 @@
 
 ## v3.0.0
 
+- Replaced Webpack with Rollup for bundling the library. As a result of this migration the library is now exported in `UMD`, `CommonJS` and `ESM` formats.
+- The library does not export standalone modules. If you need to import only one method you can import a named export.
+
 ## v2.0.2
+
 - In `del` method if index is a negative number, return a copy of the original array. By just returning the original array (as of version 1.0.3) is dangerous for mutating the resulted array if the original is mutated.
 
 ## v2.0.1