Merge pull request #106 from shekenahglory/develop

[FIX] vault client: set SJCL test entropy random string to base64
[DOC] update changelog with currency changes
Update HISTORY.md
Merge pull request #107 from geertweening/update_history

[DOC] update changelog with currency changes
[FIX] vault client: rippleTxt test request diverted to offline mock