eliminate keylistener?

[Benjmhart]

Currently we employ a keylistener for the following reasons:

1. we need to listen for cut & paste events, and while we can Poll, there is no way to distinguish two cut actions of the same content

However, there are significant downsides:

1. keylistners make users nervous,
2. we need to open up ports
3. we end up managing multiple processes
4. we depend on iohook, which is not portable

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ideally we need to find some kind of callback action we can trigger on a cut or paste - perhaps through xclip?