Performance
Merge branch 'master' of https://github.com/arch85/litle-sdk-for-java.git
Merge branch 'master' of https://github.com/arch85/litle-sdk-for-java.git
Merge branch 'master' of https://github.com/arch85/litle-sdk-for-java.git
Merge branch 'master' of https://github.com/arch85/litle-sdk-for-java.git
performance improvements