-added UNDEFINED cases in data type enums to avoid unpredictable behaviour.
-Many switch statements did not handle default, fixed that
Merge pull request #1632 from lambday/feature/log_determinant

SparseMatrixOperator memory leak fixed
-added enums to is_empty check of SGParamInfo
-to_string method now doesnt throw an error when data types are undefined
same as before
Merge pull request #1631 from karlnapf/develop

added undefined cases for data type enums
WIP: adding complex64_t <-> numpy complex mapping (issue #1493)
convert more examples to CSVFile
fix rational quadratic
disable refcount test when refcounting is not available
Update Mosek.cpp wrapper to support mosek 7
issue #1287
Add Mosek based libshogun examples if Mosek is enabled
Fix Mosek env creation in CCSOSVM for mosek v7
add USE_MOSEK macro to config.h
added ComplexSparseMatrixOperator to modular interface (log-det)