fix ocas R example
refactored log-det and computation framework
COCG linear solver fixed, unit-test modified (log-det)
modular interface updated (log-det)
Merge pull request #1586 from lambday/feature/log_determinant

Refactored log-det and computation framework
wip commit
fix version
fix version (for real)
require new data version for hdf5 test
Fix dummy test case generation for automated unittest if jinja2 is not
present
Add LMNN transform illustration to ipython notebook.
Add LMNN ape gut data experiment to the notebook