Turn inspections up to 11

OK, so let's get this out of the way, there's some actual changes mixed
in here too. I'm really sorry:
 - Turtles can now not be renamed with unnamed item tags (previously it
   would clear the name, this seemed a little unideal).
 - commands.getBlock(s)Data will also include NBT.

Now, onto the horror story which is these inspection changes:
 - Make a lot of methods static
 - Typo fixes
 - Make utility classes final + private constructor
 - Lots of reformatting (ifs -> ternary, invert control flow, etc...)
 - ???
 - Profit!

I'm so going to regret this - can pretty much guarantee this is going to
break something.

src/test/java/dan200/computercraft/core/filesystem/MemoryMount.java

@@ -60,6 +60,7 @@ public class MemoryMount implements IWritableMount
         }
     }
 
+    @Nonnull
     @Override
     @Deprecated
     public OutputStream openForWrite( @Nonnull final String path )
@@ -75,6 +76,7 @@ public class MemoryMount implements IWritableMount
         };
     }
 
+    @Nonnull
     @Override
     @Deprecated
     public OutputStream openForAppend( @Nonnull final String path ) throws IOException
@@ -123,14 +125,15 @@ public class MemoryMount implements IWritableMount
     }
 
     @Override
-    public long getSize( String path )
+    public long getSize( @Nonnull String path )
     {
         throw new RuntimeException( "Not implemented" );
     }
 
+    @Nonnull
     @Override
     @Deprecated
-    public InputStream openForRead( String path )
+    public InputStream openForRead( @Nonnull String path )
     {
         return new ByteArrayInputStream( files.get( path ) );
     }

src/test/java/dan200/computercraft/shared/wired/NetworkTest.java

@@ -273,7 +273,7 @@ public class NetworkTest
                 for( EnumFacing facing : EnumFacing.VALUES )
                 {
                     BlockPos offset = pos.offset( facing );
-                    if( (offset.getX() > BRUTE_SIZE / 2) == (pos.getX() > BRUTE_SIZE / 2) )
+                    if( offset.getX() > BRUTE_SIZE / 2 == pos.getX() > BRUTE_SIZE / 2 )
                     {
                         IWiredNode other = grid.get( offset );
                         if( other != null ) existing.getNetwork().connect( existing, other );