Fixes #415. do net call toJSV when result is null
Exceptions in REPL should be separate lines
Merge pull request #417 from filipw/415

Avoid empty lines in REPL
Moved all interfaces to Contracts so you can create modules without taking a dependency on Hosting and Core
Removed With... on overrides
Merge pull request #421 from khellang/module-refactoring

Module refactoring
Added nuget reference to Common.Logging in Contracts
Merge pull request #422 from khellang/module-refactoring

Added nuget reference to Common.Logging in Contracts