Time to destroy Walter: breaking modules into packages

[TommiT]

This is how I see the logic of this new feature you're adding:

When you have a folder named "mod" which contains a file named 
package.d, the mod folder becomes conceptually a file with same 
name and the extension "d". I.e. the folder conceptually becomes 
a module, which you can then import to other modules. All the 
code contained within all the files contained within the mod 
folder becomes conceptually the content of this imaginary mod.d 
file. Therefore it is only logical that all the code within this 
imaginary mod.d file would have access to 'package'-labeled 
symbols that are in files which are located under the same folder 
under which this imaginary mod.d file is.