Add support for bracketed pastes

[dorianvp]

This will allow inputs to be able to process drag-n-drops.

Currently, MacOS adds single quotes when dragging a file over the input, and Linux-based OS (with KDE & Dolphin) appends a 'j' character. See also #39.

[dorianvp]

More information on the appended 'j', it also happens when you copy and paste a string that contained a 'newline' at the end.