Cib support
I wanted to have multiline text support from within Xcode. This pull request represents some of the work done to make that happen, but there's plenty more to do for 'full' support.
To use LPMultiLineTextField from within Xcode's IB, I'm simply adding a NSTextField and changing its class to LPMultiLineTextField. Value bindings seems to work properly. I also fixed a few bugs that were introduced/revealed by simply using LPMultiLineTextView from within IB.
There are a few other things that aren't working just yet from the IB context, but this pull request represents the bulk of what I need. Hopefully others will find it useful as well.
- cheers
This also seems to address issue 9