* 2025-08-20 4.4
  on Stulz devices we skip inactive units
* 2025-08-07 4.3.2
  add more alarms to Stulz
  detect standby units in BOSS, cut off excess decimals
* 2025-06-12 4.3.1
  mode BOSS-SNMP-AGENT-MIB logic into Monitoring::GLPlugin
* 2025-06-12 4.3
  finish Carel BOSS
* 2025-05-28 4.2.0.1
  bugfix in WIB8000 settings failure output
* 2025-05-28 4.2
  add BOSS
* 2024-11-05 4.1.2.2
  add a settings check for Stulz WIB
* 2024-10-08 4.1.2.1
  temperature unit in spain is "grados"
* 2024-10-08 4.1.2
  handle W&T air pressure
* 2024-10-08 4.1.1
  bugfix in PDU2, prefix the performance labels (temp, hum, etc. hat identical names)
* 2024-07-24 4.1.0.2
  bugfix in Rittal LCP DX High Pressure Alarm (0=fail, 1=ok)
* 2024-07-23 4.1.0.1
  bugfix in Rittal LCP DX Remote ON/OFF
* 2024-07-19 4.1
  add KNUERR-DCL-MIB, Emerson Knuerr devices
* 2024-07-15 4.0.0.2
  preload RITTAL-LCP-DX mib to improve detection if behind PcoWeb
* 2024-07-10 4.0.0.1
  remove a "used only once" warning
* 2024-07-10 4.0
  improve rittal lcp dx behind pcoweb detection
* 2024-04-29 3.2.1
  filter Didactum sensors with --name2 (modules with --name)
* 2024-04-10 3.2
  add DIDACTUM-SYSTEM-MIB
* 2023-10-17 3.1
  add RARITAN-PDU2-MIB, fix t3hd sensors for Geist/Vertiv
* 2023-07-25 3.0
  restructured the plugin to make it more suitable and robust when used in an embedded perl worker
* 2023-06-30 2.14.0.2
  Carel Remote ON/OFF can be mitigated.
* 2023-06-30 2.14.0.1
  remove thresholds for daily highest/lowest humidity (Liebert)
  remove quotes from perfdata labels
* 2023-06-29 2.14
  use Liebert Flexible built-in thresholds
* 2023-05-31 2.13.1.1
  allow setting of thresholds for LIEBERT-GP-FLEXIBLE-MIB humidity
* 2023-05-31 2.13.1
  find more flexible sensors from LIEBERT-GP-FLEXIBLE-MIB
* 2023-05-15 2.13.0.1
  Carel/pCOWeb has a bug, showing a false high pressure (can now be mitigated)
* 2023-04-05 2.13
  add Geist V4 MIB, like Geist Watchdog (not all sensor types)
* 2023-03-07 2.12
  separate WEBGRAPH-THERMO-HYGROMETER-US-MIB and WEBGRAPH-THERMO-HYGROMETER-MIB
* 2022-10-27 2.11.0.1
  detect humidity if it is called Feuchte
* 2022-10-27 2.11
  add Wiesemann & Theis Therme-Hygro
* 2022-01-11 2.10.1.2
  improve Pco temp units
  handle Rittal Pco Standby state
* 2021-08-09 2.10.1.1
  add thresholds to KELVIN-PCOWEB-LCP-DX-MIB,
* 2021-08-06 2.10.1
  discover more Liebert devices
* 2021-08-05 2.10
  finish KELVIN-PCOWEB-LCP-DX-MIB, show the same metrics as LCP DX Overview
* 2021-08-04 2.9.0.2
  Dreckssyntaxgemaule
* 2021-08-04 2.9.0.1
  disable a reserved alarm in ENP-AC-PACC-MIB
* 2021-08-03 2.9
  add KELVIN-PCOWEB-LCP-DX-MIB (shows up as Rittal LCP DX pcoWeb)
* 2020-11-20 2.8.0.2
  fix a bug in Emerson RDU fans
* 2020-10-28 2.8.0.1
  add unitName to Stulz temperature output
* 2020-10-27 2.8
  rewrite Stulz, implement C1002 according to the oid pdf
* 2020-09-11 2.7.2.1
  do not blacklist returnAir if there is a supplyAir, check both (WIB8000)
* 2020-09-10 2.7.2
  fallback to returnAir/Hum for Stulz WIB8000 which do not support supplyAir
* 2020-08-21 2.7.1
  rewrite the Stulz WIB8000, use snmpget instead of walks, supply instead of return
* 2020-08-18 2.7.0.2
  adjust maxrepetitions for Stulz WIB8000 to avoid system freezing
* 2020-08-15 2.7.0.1
  update glplugin (papouch, v1)
* 2020-07-13 2.7
  add Rittal LCP DX
* 2020-07-08 2.6
  add Emerson ENP* devices
* 2020-05-18 2.5.1.1
  remove leftover debug output
* 2020-05-17 2.5.1
  add ENVIROMUX5D for NTI
* 2019-10-21 2.5.0.4
  remove unnecessary liebert tables
* 2019-10-21 2.5.0.3
  check Liebert for lgpSysControlOperationOnOff/lgpEnvStateSystem = off
* 2019-06-03 2.5.0.2
  fix the fix
* 2019-06-03 2.5.0.1
  fix thresholds for liebert hum/temp
* 2019-03-22 2.5
  implement more sensors for liebert/vertiv crv
* 2017-10-29 2.4.0.2
  bugfix in stulz mib
* 2017-07-27 2.4.0.1
  sync versions with lidl installation
* 2017-05-29 2.3.5.4
  remove ranges from ok output
* 2017-05-26 2.3.5.3
  ignore sensor-lost alarms for temperature thresholds of wtWebioAn8
* 2017-05-24 2.3.5.2
  update GLPlugin
* 2017-05-12 2.3.5.1
  update GLPlugin
* 2017-03-15 2.3.5
  add Papouch
* 2016-09-29 2.3.4
  add Web-Thermo-Hygrobarometer with .enterprise.5040 identifying itself as Control temperatura y humedad CPD
* 2016-08-12 2.3.3.1
  update GLPlugin/Extraopts
* 2016-05-30 2.3.3
  update GLPlugin, so customer Lidl can use regex as threholds
* 2016-05-25 2.3.2.1
  even less snmp queries for stulz wib8000. These devices easily crash
* 2016-05-19 2.3.2
  count stulz wib8000 number of active units via x-threshold num_on_units
* 2016-04-22 2.3.1.2
  bugfix in stulz wib8000 humidity output
* 2016-04-14 2.3.1.1
  reduce stulz snmp queries to a minimum
* 2016-04-04 2.3.1
  add stulz perfdata for hum & temp
* 2016-03-30 2.3
  add stulz wib 8000
* 2016-02-29 2.2
  add raritan emx
* 2016-02-08 2.1
  add glplugin submodule
* 2016-02-02 2.0
  add HWG Water Leak Detector
  use GLPlugin autoload mibs
* 2015-07-13 1.2
  new directory layout, standalone
* 2015-04-23 1.1.1.3
  update GLPlugin[SNMP]
* 2015-03-10 1.1.1.2
  fix a bug in graphthermobaro alert-sensor-relationship
  make alert text readable in debug output
* 2015-01-26 1.1.1.1
  update GLPlugin[SNMP]
* 2014-12-16 1.1.1
  update GLPlugin
* 2014-10-04 1.1
  reorganize file structure, use Classes
* 2014-10-01 1.0.2.1
  update GLPlugin
* 2014-08-13 1.0.2
  bugfix in thermobaro alert
* 2014-03-04  1.0.1
  bugfix in webioan8graph alert text
* 2014-01-08
  initial release
