Fixed the copy-constructor of vector to create a deep-copy of the given value-array, thus creating a detached copy of the given original vector.

Initial release with Vector supporting:

• normalize
• add with another vector
• subtract another vector from it
• multiply with a scalar
• scale by a factor
• calculate the scalar-product with another vector
• calculate the cross-product with another vector
• project this vector onto another vector
• project another vector onto this one

Matrix is supporting:

• add with another matrix
• multiply with another vector
• multiply with another matrix
• transpose