Release notes Master Packager 18.12.1

Features
[MPDEV-461] - Performance improvements for snapshot capturing
[MPDEV-441] - Registry exclusion list before build in Repackager
[MPDEV-445] - File/Registry tree view filter in Repackager
[MPDEV-454] - Sign Master Packager files with Master Packager Sia certificate
[MPDEV-459] - Update popup can be suppressed for all times
[MPDEV-462] - Drag & Drop registry files

Issues Resolved
[MPDEV-434] - Environment variables are added with incorrect sequence
[MPDEV-450] - Parent folders are not excluded if all child folders are excluded
[MPDEV-453] - Search results view does not show primary key
[MPDEV-458] - CA.ApplyHKCUForAllUsers not apply registry for logged on domain user