Merge pull request #6 from stefanschneider/master

Add the ability to use the Prison library from any session
Add unit tests with microsoft fakes for prison
Fix disk and lockdown test
Fix tests after rebase
Copy changesession.exe in project target path
Add test prison for a different session than 0
Fix filesystem init test
Merge pull request #7 from adasescu/test2

Add Unit Tests
Fix stack overflow