Allow to add css class per row

[ashuraits]

Simply added a function that handles css class for each row in table.
fixes #344

[lopenchi]

When it is going to be part of the library??

[lopenchi]

Still waiting that the PR has been added :( HELP US!!!

[lexzhukov]

@AlexShuraits thanks for PR.

[valekar]

How can I use this functionality ?

[marnixbent]

settings = {
        rowClassFunction: (row) => {
          if (row.cells[0].newValue === 'YAY!') {
              return 'text-success';
          } else {
              return 'text-danger';
          }
        },
        columns: {
            reactionType: {
                title: 'Type',
                filter: false,
                sort: false,
            }
        }
    };

This function is missing in the documentation.

[DependencyHell]

I would love a cellClassFunction 🤓

[lenichols]

Be sure to put the rowClassFunction above all other settings parameters so the class settings can be mapped to the row before the row is set otherwise you will get 'undefined' in your class name which you set. I was stumped on this for hours.