Lack of Swift 4.2 support

[vkolosovsky]

Cannot build with swift 4.2:

Pods/ExpandableTableViewController/ExpandableTableViewController/Classes/ExpandableTableViewController.swift:214:54: 'UITableViewRowAnimation' has been renamed to 'UITableView.RowAnimation'

[gkumarlnct]

Please update this library to Swift 4.2.

[vkolosovsky]

@enricmacias any activity on this?