Tweaks and minor things.
Garage door sound tweaks, cleanup.
Check source file structure when loading designs.  Resolves #140.
Add block illumination.
Fix illuminator getDrops crash.
Fix dupe bug affecting many blocks.
Update version number.
Add better control over block drops.
Update version number.
Render bottommost garage door cover at top when door is open.
Manage block attributes more cleanly.  Still needs compatibility code to convert old tile entity data -- do not run this!
Add tile entity data conversion code.
Remove debug code.
Rename fancy fluids to routable fluids and add different configuration options with commented tradeoffs.
Small tweak.
Add lantern style to torch.
Don't render lantern glass on inside face... less visual clutter.
Optimizations to new attribute system.  Add new upgrade items to Safe.
Bring old code up to date.  Need to test.. everything.
Fix block not updating on attribute removal.