Tasks:

• see examples
• implement extend(obj, ...objects) so keys from objects will be mixed into obj only if it doesn't contain those keys
• implement wrap(obj, ...funcs) so if obj contains func.name it should be wrapped
• implement mixin logable()
• implement universal equilateral mixin for for N sides (see 6-class.js)
• implement emitable with Object.defineProperty (see 6-evants.js)
• implement mixin for prototypes (not instances)
• implement extend for mixins with additional override:Boolean flag

constmix2=[{override: true,toString(){return`${this.name} - ${this.city} - ${this.born}`;}},{override: false,age(){constyear=newDate().getFullYear();constborn=newDate(this.born).getFullYear();returnyear-born;}}];extend(obj1,mix1,mix2);