finish implementation of PDoubleArrayOutput
add DoubleArrayOutput-test
fixed merge
changed project
changed test to support new namespace
chaged name of namespace
add first test for vectors
add first vector implementation
minor typo
implemented several protocols
add test for the added implementation
add more test for subvector
implemented PAssigment and test for vector
implemented DoubleArrayOutput for vector and also tests
bug fix in matrix-equal
add element-multiply and scale(!)
add test for element-multiply and scale(!)
implemented PVectorCross
add VectorCross-test
add criterium for bench