updated changed log based on bug fixes

Author: punjabisingh

CHANGELOG.md

@@ -4,6 +4,6 @@
 ### V1.0-SNAPSHOT
 + 2017-10-29 - Initial release.
 ### V1.1-SNAPSHOT
-+ 2018-09-10 - Bug fixes.
++ 2018-09-10 - Bug fixes to return basestring nonce value as basestring64 from integer value.
 ### V1.2-SNAPSHOT
 + 2018-09-13 - Bug fixes to sort list by ordinal comparison.