move fileName field Exception handling to getter
Merge remote-tracking branch 'origin/gettersetters' into gettersetters

Conflicts:
	src/Aspose/Cloud/Tasks/Assignment.php
	src/Aspose/Cloud/Tasks/Calendar.php
	src/Aspose/Cloud/Tasks/Converter.php
	src/Aspose/Cloud/Tasks/Document.php
	src/Aspose/Cloud/Words/Converter.php
	src/Aspose/Cloud/Words/Document.php