Merge pull request #20 from macoslib/master

Merge changes.
Merge pull request #21 from macoslib/master

Merge changes
Add NSTask, NSTaskExample.
Clean up some code.
Finish initial implementation of NSTask; add example window.
Add NSFileHandle constructor that takes a file descriptor.
Remove an old method from NSTask.
Wire up NSTaskExample to menu; fix up second example that redirects to a file.
Fix a bug that prevented linux and windows builds. Update version info.
MacResourceFork: Adds AddResource() and RemoveResource()
Merge branch 'macoslib-master'
Modified methods/properties that started with "_" so they won't

No functional changes.
Merge pull request #22 from macoslib/master

Update from master
Update from master
Reconciled conflict in About module
Minor change in release notes
Merge pull request #39 from ktekinay/master

Modified methods/properties that started with "_" so they won't
Merge pull request #23 from macoslib/master

Merge changes
Merge branch 'macoslib-master'
Merge pull request #40 from vidalvanbergen/master

Detect retina displays using a window's ScalingFactor