- Update to v1.16.0
  Improvements:
  * Health:
    + Easily disable alarms, by persisting the silencers
      configuration
    + Repeating alarm notifications
    + Simplified the health cmdapi tester - no setup/cleanup needed
    + Αdd last_collected alarm to the x509check collector
    + New alarm for abnormally high number of active processes.
  * Security:
    + SSL support in the web server and streaming/replication
    + Support encrypted connections to OpenTSDB backends
  * New collectors:
    + Go.d collector modules for WMI, Dnsmasq DHCP leases
      and Pihole
    + Riak KV instances collector
    + CPU performance statistics using Performance Monitoring Units
      via the perf_event_open() system call. (perf plugin)
  * Collector improvements:
    + Handle different sensor IDs for the same element in the
      freeipmi plugin
    + Increase the cpu_limit chart precision in cgroup plugin
    + Added userstats and deadlocks charts to the python mysql
      collector
    + Add perforce server process monitoring to the apps plugin
  * Backends:
    + Prometheus remote write backend
  * DB engine improvements:
    + Reduced memory requirements by 40-50%
    + Reduced the number of pages needed to be stored and indexed
      when using memory mode = dbengine, by adding empty page
      detection
  * Rebranding:
    + Updated the netdata logo and changed links to point to the
      new website
  * Other:
    + Pass the the cloud base url parameter to the notifications
      mechanism, so that modifications to the configuration are
      respected when creating the link to the alarm
    + Improved logging, to be able to trace the
      CRITICAL: main[main] SIGPIPE received. error
  Bug fixes:
  * Fixed ram_available alarm
  * Stop monitoring /dev and /run in the disk space and inode
    usage charts
  * Fixed the monitoring of the “time” group of processes
  * Fixed compilation error PERF_COUNT_HW_REF_CPU_CYCLES'
    undeclared here in old Linux kernels (perf plugin)
  * Fixed invalid XML page error (tomcat plugin)
  * Remove obsolete monit metrics
  * Fixed Failed to parse error in adaptec_raid
  * Fixed cluster_health_nodes and cluster_stats_nodes charts in
    the elasticsearch collector
  * A modified slave chart's "name" was not properly transferred
    to the master
  * Netdata could run out of file descriptors when using the
    new DB engine
  * Fixed UI behavior when pressing the End key
  * Fixed UI link to check the configuration file,
    to open in a new tab
  * Prevented Error: 'module' object has no attribute 'Retry'
    messages from python collectors, by enforcing minimum version
    check for the UrlService library
  * Fixed typo that causes nfacct.plugin log messages to
    incorrectly show freeipmi
  * The daemon could get stuck during collection or during
    shutdown, when using the new dbengine. Reduced new dbengine IO
    utilization by forcing page alignment per dimension of chart.
  * Properly handle timeouts/no response in dns_query_time
    python collector
  * When a collector restarted after having stopped for a long
    time, the new dbengine would consume a lot of CPU resources.
  * Fixed error Assertion old_state & PG_CACHE_DESCR_ALLOCATED'
    failed` of the new dbengine. Eliminated a page cache descriptor
    race condition
  * tv.html failed to load the three left charts when accessed via
    https. Turn tv.html links to https
  * Change print level from error to info for messages about
    clearing old files from the database
  * Fixed warning regarding the x509check_last_collected_secs
    alarms. Changed the template update frequency to 60s, to match
    the chart’s update frequency
  * Email notification header lines were not terminated with \r\n
    as per the RFC
  * Some log entries would not be caught by the python web_log
    plugin. Fixed the regular expressions
  * Corrected the date used in pushbullet notifications
  * Fixed FATAL error when using the new dbengine with no direct
    I/O support, by falling back to buffered I/O
  * Fixed compatibility issues with varnish v4 (varnish collector)
  * The total number of disks in mdstat.XX_disks chart was
    displayed incorrectly.
    Fixed the "inuse" and "down" disks stacking.
  * The config option --disable-telemetry was being checked after
    restarting netdata, which means that we would still send
    anonymous statistics the first time netdata was started.
    (NOTE: Telemetry is disabled by default on openSUSE.)
  * Fixed apcupsd collector errors, by passing correct info to the
    run function.
  * apcupsd and libreswan were not enabled by default
  * Fixed incorrect module name: energi to energid
  * The nodes view did not work properly when a reverse proxy was
    configured to access netdata via paths containing subpaths
    (e.g. myserver/netdata)
  * Fix error message PLUGINSD : cannot open plugins directory
  * Corrected invalid links to web_log.conf that appear on the
    agent UI
  * Fixed ScaleIO collector endpoint paths
  * Fixed web client timeout handling in the go.d plugin httpcheck
    collector

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