Updated restsharp reference and updated to version 1.0.4
Added new fields to casefile, signingrequest and validation. Updated to 1.0.5
Merge branch 'development' of https://github.com/Penneo/sdk-net into development
Updated documentation
Issue with nullable DateTime fixed
Updated nuget version to 1.0.5
Merge branch 'development'

Conflicts:
	docs/casefile.md