keepalive channels per backend?
Note source in channel value struct
Optimize core channel search (store backend offset)
udp backends may ignore MTU
mm_managed_fd.impl is not freed currently (and is heaped most of the time anyway) -> documentation
installer: implement an upgrade mode (check for newer versions in the repo)
evdev.c:321 divides by zero with relaxis
make event collectors threadsafe to stop marshalling data...