<commit_before>2.2
===
 - parameters can be map of vectors

2.1
===
 - Adding Composite Systems, systems that contain other systems
 - Making it possible to connect an element of a output vector to scalar input

2.0
===
 - First open source version
<commit_msg>adding Eigen and python 3.6 compatability to changes<commit_after>2.2
===
 - parameters can be map of vectors
 - Using the Eigen library for matrices
 - Tested with python 3.6

2.1
===
 - Adding Composite Systems, systems that contain other systems
 - Making it possible to connect an element of a output vector to scalar input

2.0
===
 - First open source version

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