Method removeColumns

lib/doc/table.js:377–385

(colIndex, count = 1)

  }

  removeColumns(colIndex, count = 1) {
    // Remove a column with data
    this.cacheState();

    this.table.columns.splice(colIndex, count);
    this.table.rows.forEach(row => {
      row.splice(colIndex, count);
    });
  }

  _assign(target, prop, value) {
    this.cacheState();