terom@58: TODO:
terom@58:     run other targets even if one target fails due to a error (but fail on bugs...) (base class Exception?)
terom@58: 
terom@58: 0.3.0:
terom@58:     pvl.backup.mount: mount without readonly fails to omit --options arg
terom@58:     XXX: rsync-snapshot clean_interval removes newest items
terom@58:     rsync-wrapper: uses /mnt
terom@58:     better config error when referencing an undefined interval for [target:$:intervals]
terom@58: 
terom@58: 0.4.0:
terom@58:     XXX: bad implementation
terom@58:         different run-intervals?
terom@58:         bi-daily intervals?
terom@58: 
terom@58: 0.5.0:
terom@58:     config:     split pvl-backup.d configs
terom@58:     logging:    less config/source-parsing, more 'real rsync command running'