* $SnapshotDeepMaintenanceDays = $null disables deep data checks
* updated install binary links to v0.14
* add config point for additional backup parameters
* - backup and maintenance run independently
- fixed issues with several incorrect function return values
* check for new version of restic during maintenance
* removing duplicate excludes, resolves#60
* update restic .exe version
add self-update to the install script
* Release 1.6 Changelog updates
