* Rework command-line options
* Add support for .pol (Group policy Data store) files
* Add reg+ format with extensions to reg format, for better
readability of REG_MULTI_SZ and REG_QWORD values
RegSetValueEx has sometimes expectations about the format of the
registry values, and will change the binary data transparently.
This is unwanted in our scope so we use ntdll function directly.
Fixes#4
bmortgat