Release v2.3.6

Lino Sanfilippo (4):
      compact: fix race condition in cycle timer
      flat: fix compiler error
      Fix compiler warning concerning missing prototypes
      Set correct return value in do_tree()

Nicolai Buchwitz (3):
      piControl: use sched_setattr_nocheck for RT prio
      piControl: fix RevPi Flat DAC output scaling
      piControl: Make Flat reset less verbose

Ramiro Gsponer (1):
      Release v2.3.6

Thomas Böhler (3):
      piConfig: free alloc'd resources in do_tree on err
      piControl: remove unused variable "done"
      ci: automatically submit new releases to coverity