Is it possible to request a code review?

[IM]

I'm still looking for feedback about these points:

   - Any candidate class that can be better switched to a struct 
or even a template?
   - The use of shared and __gshared, did I get those right? I 
find the TLS concept unpleasant, because it makes me unsure 
what's the right thing to do. For example:
     - If a class that instances of which will be accessed by 
multiple threads, should it be marked `shared`. For instance 
`TaskQueue` 
(https://gitlab.com/3d_immortal/libdtasks/blob/master/src/tasks/TaskQueue.d#L9).
     - What about the members of a class, do they ever need to be 
marked as shared?
     - Also, in this unittest : 
https://gitlab.com/3d_immortal/libdtasks/blob/master/src/tasks/SingleThreadTaskRunner.d#L148, I didn't mark `number` as shared, even though it is accessed by two threads, and I didn't see any unexpected behavior (because the task runners implicitly synchronize access to it using tasks and replies). But in the other unittest here: https://gitlab.com/3d_immortal/libdtasks/blob/master/src/tasks/ThreadPoolTaskRunner.d#L100, I marked `number` as shared just because I believed I have to since it will be accessed by many threads arbitrarily.