* origin/master:
  client: account for cache hit/miss statistics
  client: remove redundant information from cache's __repr__
  cache: fix possible endless loop in __repr__/_iterQueue
  storage: speed up replication by not getting object next_serial for nothing
  storage: speed up replication by sending bigger network packets
  neoctl: remove ignored option
  client: bug found, add log to collect more information
  client: new 'cache-size' Storage option
  doc: mention HTTPS URLs when possible
  doc: update comment in neolog about Python issue 13773
  neolog: add support for xz-compressed logs, using external xzcat commands
  neolog: --from option now also tries to parse with dateutil
  importer: do not crash if a backup cluster tries to replicate
  storage: disable data deduplication by default
  Release version 1.8.1