Changed getInputs/getOutputs behaviour.
Entity is now implicitly the chip if no entity is specified.
Fixed SF.Entities.IsValid, now uses global IsValid
Problem occured if not entity and tried calling e:IsValid
Merge pull request #273 from awilliamson/wireio

Wire getInputs/getOutputs
Fixed screen helloworld font error.

Fixes #244
Merge pull request #255 from awilliamson/fixScrEx

Fixed screen helloworld font error.
Merge pull request #2 from INPStarfall/develop

Updating from master