v0.8.0

#23

Breaking changes

• remove constructor in component declaration. init() method is automatically called in Component constructor.
• remove this.components property

Add child/children components :

  public header = this.add(Header)

• remove this.elements properties
• change add() method params order

add<T = Component, P = TProps>(
    classComponent: TAddComponent,
    props?: P,
    returnArray?: boolean,
    attrName?: string
): T;

• Remove updated() method