* Pad:v1 was introduced

* Fixed problem with foward declaration

* Code review remarks introduced

* Addtinal asserts and unit-test for Pad:v1 introduced

* Handled optinal arg_pad_value input

* Fixed unit tests messages and clang styles applied

* Styles applied, checking rank improved

* Updated changes.md

* Revert "Updated changes.md"

This reverts commit 8ee16e580705275ee0719648d5251021354e4d84.

* Clang warning fixed