Update Target Frameworks

Target Frameworks: net47;net472;net48;netcoreapp3.1;net5.0-windows;net6.0-windows

Full Changelog: v1.1.7...v1.1.8

NET6.0-windows support

Full Changelog: v1.1.6...v1.1.7

.NET 5.0 (Windows) & MD-5 to FNV-1a

What's Changed

• Fnv1 by @fatihyildizhan in #4
• Fetch upstream & MD-5 to FNV-1a by @fatihyildizhan in #3

Full Changelog: v1.1.5...v1.1.6

.net core 3.1 & .net framework 4.8 support

Merge pull request #1 from bau-global/fatihyildizhan-patch-1

Update README.md