threadteam 0.3.0

Scoped CPU thread-team placement token: a Pool and a non-Clone Exec with fork, for_ranges, external and broadcast; no Rayon type in the public API.
Documentation
team/hot                     w=2        764 ns
team/gap1ms                  w=2       6083 ns
team/gap10ms                 w=2       6458 ns
team/gap300ms                w=2      37583 ns
team/load10us-minus-10us     w=2       3318 ns
team/fork-hot                w=2       1365 ns
team/hot                     w=4        769 ns
team/gap1ms                  w=4       6750 ns
team/gap10ms                 w=4       6417 ns
team/gap300ms                w=4      27417 ns
team/load10us-minus-10us     w=4       2221 ns
team/fork-hot                w=4        827 ns
team/hot                     w=6        594 ns
team/gap1ms                  w=6       7250 ns
team/gap10ms                 w=6       7167 ns
team/gap300ms                w=6      22667 ns
team/load10us-minus-10us     w=6       1397 ns
team/fork-hot                w=6        689 ns
plain/outside-hot            w=2      11307 ns
plain/outside-gap1ms         w=2      17917 ns
plain/outside-gap10ms        w=2      31167 ns
plain/outside-load10us-minus-10us w=2      14401 ns
external/outside-hot         w=2      11757 ns
external/outside-gap1ms      w=2      18292 ns
plain/in-pool                w=2         31 ns
plain/in-pool-load10us-minus-10us w=2       6023 ns
plain/outside-hot            w=4      12073 ns
plain/outside-gap1ms         w=4      15875 ns
plain/outside-gap10ms        w=4      35875 ns
plain/outside-load10us-minus-10us w=4      19099 ns
external/outside-hot         w=4      10493 ns
external/outside-gap1ms      w=4      20042 ns
plain/in-pool                w=4        116 ns
plain/in-pool-load10us-minus-10us w=4      10795 ns
plain/outside-hot            w=6      11725 ns
plain/outside-gap1ms         w=6      33167 ns
plain/outside-gap10ms        w=6      40875 ns
plain/outside-load10us-minus-10us w=6      18547 ns
external/outside-hot         w=6      12186 ns
external/outside-gap1ms      w=6      21292 ns
plain/in-pool                w=6        153 ns
plain/in-pool-load10us-minus-10us w=6       5309 ns