* WIP Improve sln migration tests
* Simple migration test
* Improve the test
* WIP update test assets
* Update test
* Test a bug fix
* Add another migrate sln test
* Fix FilePath related tests
* Finish the migrate sln tests
* Fix tests
* Fix another path issue
* Snap of sln reader/writer from https://github.com/mono/monodevelop
* Remove unnecessary code
* Create a new test asset with an sln file because adding an sln to an existing one broke other tests
* Remove commented out line
* Removing unneeded PropertyGroup per PR comments
* Update the license
* Fixing the license
