v4.0.0 2012-07-12
	* fminer addition of compounds fixed
	* improved performance for CSV download
	* switch to opentox-ruby version 4.0.0

2012-04-20
	* Support for joelib and openbabel descriptors in a completely unified interface with CDK (Ambit)
	* Features can have multiple types (nominal and numeric), PC descriptors have detailed meta data
	* Myriads of bugfixes to CSV download code (e.g. missing descriptors, handling of duplicates)

v3.1.0 2012-02-24
	* utils.rb: added for special routines (e.g. descriptor calculation)
	* task.rb: Polling with increasing interval
	* parser.rb: CSV up and download fixed
	* transform.rb: routines to create machine learning data matrices
	* algorithm.rb: SVM parameter grid search, cos similarity as algorithm,	gauss() removed

v3.0.1 2011-10-19
	* feature: model registration to ontology service
	* ontology lib gets endpoints from ontology service

v3.0.0 2011-09-23
	* datasets stored as json (with Yajl) to improve performance