Function to get current caret position

[0xWDG]

Hi,

This commit adds a delegate function what triggers if the caret has moved.

func textView(_ textView: STTextView, didMoveCaretTo row: Int, column: Int) { }

[CLAassistant]

All committers have signed the CLA.

[krzyzanowskim]

thank you for that!

I wonder whether the STTextView.didChangeSelectionNotification is insufficient for that purpose. It's modeled after how NSTextView works. The notification is fired for every selection change, and since the caret position is a selection, it is fired on every caret position change too.

The didChangeSelectionNotification notification is fired after change, meaning the handler can obtain the new position from the STTextView.

wdyt?

[krzyzanowskim]

given the explanation above, I'm unlikely to merge these changes