v0.2.0

• More typesafe implementations
• Add PtrOf which makes a copy of the given interface and returns a pointer
• Add IsEqual which returns if the two objects are equal
• Add IsType which returns if the two objects are in the same type
• Add IsEmpty which returns if the object is considered as empty or not
• Add IsZero which returns if the object is a zero-value
• Add ToFloat64 which convert an object to float64