Version 0.10.1

This maintenance release moves Reko from .NET Core 3.1 to .NET 5.0, resulting in some performance gains.
It also fixes the MSI installers for Windows, which had several issues (including #1066 and #1067). Special thanks to @smx-smx for his work on his CI integration work.

• The Reko build system now assumes C# 9.0
• Crude support for #define directives in the Reko C parser
• Overhaul of PA-RISC and HP SOM loader
• The command line driver --version switch displays the git hash used to build the binary.
• Improvements in AArch64 disassembler and rewriter (with @rfalke as a driving force)