Description
Problem
Sometimes something major happens and you have to move many items on a timeline fast. For example, we shift all features 1 weak ahead. Now it is not possible.
Solution
Implement batch drag and drop. Select several cards and move them horizontally
Gantt View: Also allow to move them vertically
* See how DnD works on board view
Refs
Asana has it.
https://help.asana.com/hc/en-us/articles/14110604127643-Timeline#01H7WN1ET4G47EM5M9BQEZRHYH