Add tamper sub-module
Problem/Motivation
We do require string manipulation actions and if possible, don't want to develop or maintain them ourselves.
Proposed resolution
There is the famous Feeds Tamper module, which offers all we need but that depends on Feeds, which we don't want to declare as a dependency. But the good news is that they already outsources all the tampering plugins into an API module called Tamper which is now not only used by feeds but also by migrate. So that's a wide range of usage and we can utilize that as well.
Edited by drupalbot