1.0.0 (2009-02-20) by cs - Initial Release
2.0.0 (2011-03-23) by cs - Add incremental backup and mixtures of local and
	remote backups, most of the script is rewritten
2.0.1 (2011-03-25) by cs - Add a local and remote check for rsync, fix log
	name
2.0.2 (2011-03-28) by cs - remove exit on certain errors, instead skip to
	next backup
2.0.3 (2011-03-29) by cs - additional debug log, unset/preset some vars
2.0.4 (2011-05-04) by cs - preventing root from being the target, ignore some
	rsync errors
2.0.5 (2012-03-14) by cs - improve log handling, check for running backup after
	sourcing the configuration
2.0.6 (2012-04-05) by cs - fix in log handling, add a ignore list for errors
2.0.7 (2012-05-15) by cs - fixed default var assignment of snap_mnt_base
2.0.8 (2013-09-21) by cs
  - fixed error in mountpoint detection of LV's
  - fixed error in checkErrLog
  - flag destination base with 'nospace_lock' if disk if full and refuse
    further backups to it
  - write backup to temporary target and move it only when the backup was
    successfull
  - prevent the removal of the last backup when creating incremental backups,
    even if it should be remove, as it is too old
  - improved email functionality of the logging and warnings if there are
    unfinished previous backups left
2.0.9 (2013-12-10) by cs
  - minor error fixes with root backup and non incremental backups
  - implementation of mount destination fs by id
  - minor fix and change to the device (u)mount function
2.0.9.1 (2014-05-10) by cs
  - introduce a cleanup job, to unmount destination volume if we end a backup
    premature due to an error
2.1.0.b1 (2014-07-14) by cs
  - beta 1 of the new version
2.1.0.b2 (2014-07-15) by cs
  - beta 2 of the new version
2.1.0.b3 (2014-07-16) by cs
  - beta 3 of the new version
2.1.0.b4 (2014-07-20) by cs
  - beta 4 of the new version
2.1.0.b5 (2014-07-22) by cs
  - beta 5 of the new version
