New build, OSX support

Diamond Deeps now supports Mac OS/X for all you Mac fans out there, this means you can play it on Windows, Mac or Linux and even copy the generated levels between the 3 platforms too.

Additional there is some more levels added, including the coveted 3-ghost level! Sorry, on a tuning pass I must have removed the 3rd ghost from a previous level so the achievement was not attainable. SORRY!

In addition to this there are some other changes to improve your quality of life!

• Trapping can now be done by simply tapping the key, no longer do you need to hold it down
• Traps should be able to be placed on ladders correctly now
• You cannot accidentally erase a level while editing.. you instead need to press erase from the level selection screen in Edit mode.
• Mining hit area has been widened! No longer will you need to be exactly spot on top of the Diamond nodes.

Let me know how you find the enhancements!