Maya Group and Manipulate Keyframes Tool - Python

The tool allows the user to more easily manipulate keyframes in Maya. He is able to select them using a numeric range and move them by the desired amount really fast. Moreover, the user can choose to create a group and save the specific range to be used later on. The group will automatically update when the keyframes get shifted.
This tool tries to make the life for animators easier giving them the possibility to save motions that are made from multiple keyframes as groups and then manipulate those very easilty to get their timings right.