Encoded and decoded a `Uint8Array` into base64, using `commCoreModule.base64{Encode,Decode}buffer()` and console-log.
Used three different length of Uint8Arrays to test all padding values, e.g.:
```
lang=js
new Uint8Array([1,2,3,4,5,6]); // AQIDBAUG
new Uint8Array([1,2,3,4,5,6,7]); // AQIDBAUGBw==
new Uint8Array([1,2,3,4,5,6,7,8]); // AQIDBAUGBwg=
```