Add invalid_parameter exception
Add validation of configurable paramater
Add tests
Add type method to mixers
Add validation of mixer
Add  #include <string> to mixer.hpp
Add validation of configurable paramater to Anomaly
Add validation of configurable paramater to Graph
Add validation of configurable paramater to Stat
Add validation of configurable paramater to Regression
Add validation of configurable paramater to NN
Add validation of configurable paramater to Recommender
Add validation of configurable paramater to Clustering
Check input values (not member variables)
Fixed wrong constructor call
Add testcase to Stat
Add testcase to Graph
Add validation of compressor_method
Merge branch 'release/0.5.4' into develop
Merge branch 'master' into develop