Princess 0.3.10

Breaking changes ahead!

• Change struct initializer to []
• Removed the ability to initalize struct elements by index
• Change closure types to use the new tuple syntax for arguments and return types
• Change array access syntax to arr(x) and arr(x) = v. This is done using apply and update
• Add tuples using the new initalizer syntax let a: [int, double] = [10, 10.5]
• Tuples convert from and to arrays depending on if the elements are compatible with each other
• Multiple return types can also be defined using the tuple syntax in function definitions
• Add anonymous structs