tableView(_:canEditRowAtIndexPath:) returns true by default

[serluca]

The UITableView dataSource implementation of the method tableView(_:canEditRowAtIndexPath:) is returning true by default.
This can cause unexpected behaviour when using RxDataSource, an example is the Customization using table view delegate in the Example app that shows the delete button when sliding the cell from the right to the left.

According with the documentation the default value should be:

Return Value
true if the row indicated by indexPath is editable; otherwise, false.