WIP: separate deque/stealing/trading logic from general scheduler logic.

3 jobs from master in 3 minutes 19 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #3650
build_cmake

00:52

 
  Test
passed #3651
run_tests

00:51

 
  Sanitizer
passed #3652
run_address_sanitizer

01:35