Hi Robert, This looks like a really great (clean and performant) JS library for interacting with data grid. I'll definitely remember to try it for my next side

Hi Robert, This looks like a really great (clean and performant) JS library for interacting with data grid. I'll definitely remember to try it for my next side project. A quick question: is there a way to make only some of the columns read-only in the grid? I looked through the doc [https://www.datagridxl.com/docs/setting-options https://www.datagridxl.com/docs/setting-options] and it seems like user actions for columns are all (applied to every column) or none. If DataGridXL.js allows assigning read-only to a subset of columns, it'd be great to add that in the doc with an example. Thanks for your hard work and especially for allowing others like me to try it for free!