Handsontable for YAML webform

This module allows both the Drupal Form API and the Drupal 8 Webforms module to use the Excel-like Handsontable library.

How to use

• Typically, you will use this module in combination with Webforms 5.x or higher
• You can add one or more Handsontable elements to your webform just like any other element (textarea etc.)
• When you add your first Handsontable element, instructions on where to place the official JavaScript and CSS files from https://handsontable.com.
• All table data will be stored as a nested JSON list: each cell is a string, each row a list in the list of rows.
• Every webform admin can specify 'View settings' for the Handsontable look and feel. For example, you can specify the data type of columns by specifying a columns key with a list of types for each cell - see https://docs.handsontable.com/pro/1.9.1/tutorial-cell-types.html for more details.