suggestion for output in case of failing integration test
refactor gradient model selection framework
fix converter_jade_bss example
Merge pull request #1658 from karlnapf/develop

suggestion for output in case of failing integration test
Merge pull request #1640 from votjakovr/feature/gp_refactoring

Refactor gradient model selection
Merge pull request #1662 from gsomix/feature/jade_bss

Fix converter_jade_bss example
ipython notebook added (log-det)
Merge pull request #1659 from lambday/feature/log_determinant

ipython notebook added (log-det)