Add getCode and getVariables methods back into SerializableClosure
Clean up Eloquent folder a bit

- Re-arrange namespaces
- Properly indent params in DocBlocks
- Add missing params in DocBlocks
- Add dependencies in to some function parameters (Mostly Builder classes)
- Fix some incorrect return types
Replace incorrect return type
Merge pull request #2385 from jeremeamia/4.0

Add getCode and getVariables methods back into SerializableClosure
Defautl value when reflashing.
Merge pull request #2391 from DriesForks/fix/clean-up-eloquent-folder

Clean up Eloquent folder a bit
Dynamic flashing on Redirect.
Fix type-hint.
Allow non-integers in sync.
Merge branch '4.0'