Total reload

• A lot of fixes of bugs
• Switching to .NET Core 2.0
• Add ability to load frameworks
• Create wolSystem 0.7.0 and lite-Thread (no version)
• Add a lot of expressions
• Create examples

First test (beta-)release

First release for active test becouse there are a lot of bugs and almost expressions.
It is single version who work for .NET Core 1.1