Final fuctions

• Marked numerous functions in type objects as final
• Moved request validation inside try-catch block

Multiple operations

• request can now contain multiple operations

Improved object ergonomics

• Request is passed as whole json instead of separate parameters (BC break)
• Added validation of request body

Printing of descriptions (api documentation)

Merge pull request #15 from vossik/sorting

Print description

Abstraction of printing order

• ability to implement different sorting algorithm
• AlphabeticalSorter (default) and TypeKindSorter included

Printing - alphabetical sort of types

• Alhpabetical sort of printed types
• EnumItem constructor can set description directly

Removed Instaniable interface

• Instantiable::createValue was moved to Definition interface and Instantiable was removed
• Resolve function now works the same for both concrete and abstract return types.
  • Previously: Abstract resolve functions were required to return FieldResult with concrete resolution, this caused major problems for list of abstract types
  • Now: Abstract resolve functions can return any result normally, but Abstract types must implement createValue method which should be used to specify concrete resolution

Schema printing

• Implemented schema printing
• New contract: Leaf - either Enum or Scalar
• Few changes to SimpleContainer

Lazy input fields, minor improvements

• Lazy loading of input fields (using same interface as regular type)
• Added EnumItemSet::getArray, to return raw array of options
• Added SimpleContainer implementation

Error responses, location in source

• Source: replaced position int with Location object
• Added errors into response