Mykola (Nickolas) Pokhylets

I don't see it being used in public interface anywhere. But I agree, this does not make a big difference, I'll revert it.

> `BackDeployConcurrency` is actually supposed to be frozen in time, and not updated with new features. For back-deployment of this feature, we'll have to bring up another statically-linked back-deployment library...

I don't have any objections to remove the property - in my code I'm always setting it to YES. I've added property for backward compatibility with existing code. Also there...

If `self.semanticContentAttribute == UISemanticContentAttributeForceLeftToRight`, then `_shouldFlip` should return NO regardless of `[UIApplication sharedApplication].userInterfaceLayoutDirection`. Starting from iOS 10, there is a nice property: `@property (readonly, nonatomic) UIUserInterfaceLayoutDirection effectiveUserInterfaceLayoutDirection` which computes layout...

Rebased and updated implementation: * Removed all code changes related to TL, but updated and preserved unit-tests. * Preserved `flags` parameter, as an extension point for the future. No strong...

@rjmccall, I get the general idea of having 5 double-linked lists, but I'm afraid I did not understand some of the details that you've mentioned. > we probably shouldn't fall...

I've pushed a commit, which implements actor's queue as a single linked list but with 5 insertion points. This is sufficient to ensure that each job is preprocessed in O(1)....

Updated. Prioritised and non-prioritised queues are fully separated. `JobRef` removed. Prioritised is stored in the end of the actor layout to minimise false sharing. It was a bit challenging to...

@rjmccall, do you want some TODOs to help you get back to the topic of ordering in actor destruction and assertions?

Is there a plan to sync back with [zneak/fcd](https://github.com/zneak/fcd)? Should project use coding style of the original project or conform with one of trailofbits?