etl

9c94fb30 - Merge remote-tracking branch 'origin/feature/rvalue-references' into development

Merge remote-tracking branch 'origin/feature/rvalue-references' into development # Conflicts: # include/etl/flat_map.h # include/etl/flat_multimap.h # include/etl/flat_multiset.h # include/etl/flat_set.h # include/etl/queue.h # include/etl/queue_mpmc_mutex.h # include/etl/queue_spsc_atomic.h # include/etl/queue_spsc_isr.h # include/etl/queue_spsc_locked.h # test/test_flat_map.cpp # test/test_flat_multimap.cpp # test/test_flat_multiset.cpp # test/test_flat_set.cpp