Input Box for multiple variables in Qlik Sense (similar to Input Box in QlikView)

Reference this extension from Qlik Garden: https://developer.qlik.com/garden/5a1d8a641de728c3852e5ece 

1. Ability to define Default Value for a variable
2. Ability to display Previous Value for a variable
3. Ability to revert back to Default Value
4. Ability to update single variable
5. Ability to update multiple variables
6. Ability to clear variable values
7. Ability to format labels per variable
8. Ability to change number of rows and columns for matrix of variables