1.2.1

• Improved mutation rules: They can now be added, removed and persisted via shared pointers
• Added object::has and object::get with const char* to query mixins by name
• add_new_mutation_rule is now deprecated
• Fixed library version header

1.2.0

• Introduced a new feature: Message bids
  • Overriding multicast functions is now possible
  • Added DYNAMIX_CALL_NEXT_BIDDER which works for unicasts and multicasts
  • Added bids tutorial
• Dropped CMake 2.x support. Transition to modern CMake (3.2+)
• Fixed a bug which caused a leak when defining an invalid type (when a mutation causes an exception to be thrown)

1.1.0

• Dropped support for an obscure optimization feature which allowed for the same
  mixins and messages to be defined multiple times in multiple modules (i.e. in a
  static library linked to those modules)
• Fixed bug with crashes when unloading and then reloading a plugin which
  defines a message.
• Fixed various bugs with unused (which no mixin features) messages:
  • obj.implements(unused_msg) caused a crash
  • unused(obj ...) cause a crash (instead of exception)
  • Crash when only a plugin uses the message
• Added (optional) mutation thread safety; in that mutating two different
  objects in two different threads is now safe.
• Added optional additional metrics to object and mixin type data to show the
  number of objects and mixins, respectively, of a given type.