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- Update to version v5.2
  + Move counters definition from memory.c to shmem.c magically clears a lot of (wrong) VSCode errors. Doing this on request of a user as it is harmless.
  + Import unknown clients from ARP table
  + Explicitly set prepared statements to NULL when they are finalized.
  + Explicitly log if we had to make assumptions because the gravity database was not available.
  + Add DELAY_STARTUP setting to delay startup of the embedded dnsmasq.
  + Remove option FORCE_LOCAL_RESOLVER as we do not need it.
  + Add more comments, only print debugging output when DEBUG_DATABASE is enabled.
  + Simplify SQLite 3 database extension
  + Convert recently found (at most 1 hour old) mock-devices into "real" when we gather ARP/neigh information about them.
  + Fix nameserver list in auth mode.
  + Allow overriding of ubus service name.
  + CircleCI has an unforseeable number of devices in its ARP cache. Do not check for a strict number of clients during the tests. No changes to the source code.
  + Ensure blocking also works when the long-term database is not used. This was broken before as we returned too early (the SQLite3 engine was not yet fully initialized) when the long-term database was disabled.
  + Fix possible memory leak in config.c
  + Some general tweaks
  + Explicitly log failures in creating the new sqlite3 function.
  + Ensure we don't loose memory after ARP cache parsing.
  + Also return NO MATCH when invoking subnet_match() with non-TEXT arguments.
  + Add a comment that gethostbyaddr() may leak memory (only once, not seen leakage of more than 110 bytes)
  + Check arguments are of type SQLITE3_TEXT
  + Initialize resolver subroutines if trying to resolve for the first time
  + Only check/set client status when size of the array is not exceeded. Skip otherwise.
  + Do not import unknown clients from the ARP cache into FTL's memory. It is not our job to care about them if they are not doing any DNS queries.
  + Ensure ARP strings are NULL-terminated
  + Exiting instead of aborting may be benefitial in FTL forks.
  + Print arguments passed to embedded dnsmasq when at least one DEBUG flag is set.
  + Re-open gravity database (and re-prepare database statements) before accessing the database in case FTL forked.
  + Memorize PID of this thread to avoid re-opening the gravity database connection multiple times for the same fork

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