* 2.2.2 2016-05-13
  handle permission/syntax problems for mode sql
* 2.2.1 2015-08-18
  fix the autoconf m4, so the debian-builds don't fail (thanks Jan Wagner)
* 2.2 2015-04-23
  add rfc3986-encoded passwords
* 2.1.9.2 2014-12-22
  bugfix in InnoDB initialization & versions > 5.6.1 (Thanks Jorg Veit)
* 2.1.9.1 2014-06-12
  add connections_aborted, open_files to the pnp template (Thanks Simon Meggle)
* 2.1.9 2014-06-12
  bugfix in pnp template (Thanks Simon Meggle)
  bugfix in qcache calculation (Thanks lermit)
* 2.1.8.4 2014-04-01
  implement --negate old_level=new_level
  allow floating point numbers in thresholds
* 2.1.8.3 2012-10-15
  output also ok-messages for my-modes
* 2.1.8.2 2012-08-08
  bugfix in querycache-hitrate (div by 0 after db restart). (Thanks Gianluca Varisco)
* 2.1.8.1 2012-01-21
  bugfix in timeout-alarm handling under windows
  fix warnings for newest perl versions
* 2.1.8 2011-09-29
  new parameters --mycnf and --mycnfgroup
  single ticks around the --name argument under Windows CMD will be removed auto
matically
* 2.1.7 2011-08-23
  innodb modes now detect problems with the innodb engine
* 2.1.6 2011-08-12
  fix a bug with statefilesdir and capital letters
  add --labelformat so that groundwork no longer complains (max label length is 19 characters)
* 2.1.5.2 2011-06-03
  sites in an OMD (http://omdistro.org) environment have now private statefile directories
* 2.1.5.1 2011-01-03
  bugfix in --mode sql (numeric vs. regexp result)
* 2.1.5 2010-12-20
  fixed a division by zero bug in index-usage (Thanks Wiltmut Gerdes)
  fixed a severe bug when loading dynamic extensions (Thanks Ralph Schneider)
  added mode table-fragmentation
  fixed a bug in table-lock-contention (thanks mayukmok00)
  mode sql can now have a non-numerical output which is compared to a string/regexp
  new parameter --dbthresholds
  new mode report can be used to output only the bad news (short,long,html)
* 2.1.4 2010-10-02
  added modes threads-created, threads-running, threads-cached
  added connects-aborted, clients-aborted
* 2.1.3 2010-09-29
  added mode open-files
  fix a bug in the pnp template
  add extra-opts
* 2.1.2 2010-06-10
  changed statements for 4.x compatibility (show variables like) (Thanks Florian)
* 2.1.1 2010-03-30
  added more tracing (touch /tmp/check_mysql_health.trace to watch)
  fixed a bug in master-slave modes, so it outputs a more meaningful error message (Thanks Will Oberman)
  fixed a typo (Thanks Larsen)
* 2.1
  parameter --lookback uses custom intervals for _now-values
* 2.0.5 2009-09-21
  fixed another bug in master-slave modes. (Thanks Thomas Mueller)
  fixed a bug in bufferpool-wait-free. (Thanks Matthias Flacke)
  fixed a bug in the PNP template. (Thanks Matthias Flacke)
  slave-lag now handles failed io threads. (Thanks Greg)
  fixed a bug in connections with non-standard sockets (Thanks Stephan Huiser)
* 2.0.4
  fixed a bug in --mode cluster-ndbd-running where dead api nodes were overseen
  fixed a bug in master-slave modes. (Thanks Arkadiusz Miskiewicz)
* 2.0.3
  fixed a bug with 0 warning/critical
  fixed a bug in long-running-procs (affects only mysql 5.0 and below). (Thanks Bodo Schulz)
* 2.0.2
  $NAGIOS__HOSTMYSQL_HOST etc. is now possible
* 2.0.1 2009-03-09
  fixed a (harmless) bug which caused uninitialized-messages. (Thanks John Alberts & Thomas Borger)
  enabled password-less login to localhost.
* 2.0 2009-03-06
  This is the first release of the new plugin check_mysql_health
  It replaces check_mysql_perf which is a nightmare to install
  It is written in Perl
  It can use either DBD::mysql, the mysql command or DBD::SQLrelay
  It can monitor mysql clusters (the ndb stuff)
  It can execute custom sql statements