Merge pull request #12 from quamotion/fixes/optional-arguments

...Tools/Protocol/iOS/Debugger/EvaluateOnCallFrameCommand.cs

...otocol/iOS/Debugger/EvaluateOnCallFrameCommandResponse.cs

...e/ChromeDevTools/Protocol/iOS/Debugger/FunctionDetails.cs

...evTools/Protocol/iOS/Debugger/GlobalObjectClearedEvent.cs

source/ChromeDevTools/Protocol/iOS/Debugger/Location.cs

source/ChromeDevTools/Protocol/iOS/Debugger/PausedEvent.cs

...s/Protocol/iOS/Debugger/PlayBreakpointActionSoundEvent.cs

source/ChromeDevTools/Protocol/iOS/Debugger/ResumedEvent.cs

...evTools/Protocol/iOS/Debugger/ScriptFailedToParseEvent.cs

...ChromeDevTools/Protocol/iOS/Debugger/ScriptParsedEvent.cs

...eDevTools/Protocol/iOS/Debugger/SearchInContentCommand.cs

...vTools/Protocol/iOS/Debugger/SetBreakpointByUrlCommand.cs

...omeDevTools/Protocol/iOS/Debugger/SetBreakpointCommand.cs

...evTools/Protocol/iOS/Debugger/SetOverlayMessageCommand.cs

source/ChromeDevTools/Protocol/iOS/IndexedDB/Key.cs

source/ChromeDevTools/Protocol/iOS/IndexedDB/KeyPath.cs

source/ChromeDevTools/Protocol/iOS/IndexedDB/KeyRange.cs

...romeDevTools/Protocol/iOS/IndexedDB/RequestDataCommand.cs

...Tools/Protocol/iOS/Inspector/ActivateExtraDomainsEvent.cs

...ce/ChromeDevTools/Protocol/iOS/Inspector/DetachedEvent.cs