Better MIDI Handling

Two problems cured:

• The 64bit VSTHost didn't allocate enough memory for MIDI messages, leading to occasional crashes.
• The Uninstaller didn't take the new installation method into account; uninstalling the driver may need a reboot, which is handled now

Windows 10 2004 Persistence Release

This version sets up the registry in a different, much more complex way that is required for Windows 10 Version 2004 and later.
This is done through a new NSIS plugin that employs a method adapted from the excellent munt project's Win32 installer, which had to overcome the same problem.

Preliminary Release

This is based on the 3 Jan 2018 version, just built with VS2008; seems to work OK for some PlugIns, may still crash on others.
While there ARE some small fixes, the overall architecture is still the same as in Jan 2018.

vstmididrv_last.exe is the last kode54 installer known to me. Included because it was built on a later day than the sources from Github; it might have some corrections, so it might be good to have for comparisons if a problem comes up.