* changed description text of Visual Studio plugin
* changed plugin install targets to include VS 2017
* add license file with MIT license
* updated vsix for deployment
* implement wrapper for all used classes of VCProjectEngine.dll since you cannot just use the oldest version of this
assembly (see https://stackoverflow.com/questions/44288050/typecast-fails-when-visual-studio-extension-uses-reference-to-older-assembly).
* improved serialization and deserialization of compile commands and compilation databases.
* updated used JSON package
* rename CommandObject to CompileCommand
* changed implementation to keep non-existent file paths in cdb
* made methods of SolutionParser non-static
* replace spaces with tabs
* added IntegrationTests project
* configured tests to simulate a new instance of VisualStudio
* added cinder as test project for integration tests
* remove all absolute paths from expected output of integration tests
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