v0.5.0

• Forbid circular references with fixed lists

  The following schema is now correctly rejected:

  struct Person {
      bestFriends: [2]Person
  }
  

• Allow enum type and aliased types for map key type

  The following schema is now valid:

  enum Gender {
      FLUID
      MALE
      FEMALE
  }
  
  type GenderNames map[Gender] string
  

• Allow unsorted tags for unions and enums

  The following schemas was previously rejected because of unsorted tags.

  enum Gender {
      FLUID = 1
      MALE = 0
             ^ error was reported here
      FEMALE = 2
  }
  

  type UnsignedInt (u8 = 1 | u16 = 0 | u32 = 2 | u64 = 3)
                                   ^ error was reported here
  

  These schemas are now allowed.
  They are still rejected in pedantic mode (option --pedantic)