Fixed some block checks

* Fixes #1330
Cleaned up simulators
Improved redstone simulator

* Fixed style inconsistencies
* Used more C++11 features
* Improved speed perhaps
Fixed compilation?
Added cocoa pod.
Merge branch 'master' into redstone
Removed test
Merge branch 'master' into Cocoa
Fixes
"Don't set compiler to gcc on clang builds"
Fix forgoten thens
Double equals
final syntax errors
Clang needs the libstdc++ that comes with gcc-4.8
"& 0x0f" isn't needed
Merge branch 'master' into Cocoa
Fixed fence/-gates and door recipes and added baked potato recipe
Merge pull request #1670 from Masy98/crafting

Fixed fence/-gates and door recipes and added baked potato recipe
Merge pull request #1635 from mc-server/Cocoa

Added cocoa pod.
Fixed mob invisibility