Prepare to integrate outlier function with Imeds data
fix confilct of ComorbidDataSEtWorker.java
Merge branch 'master' of https://github.com/cherylautumn/demo

Conflicts:
	src/main/java/org/imeds/data/ComorbidDataSetWorker.java
1. this version completes basiic logical regression outlier selection.
Todo
1. conver birth year into age
2. convert gender into binary
3. Notice: ther user feature matrix must be linearly independent. add
check mechanism.
4. try to convert race and ethnity into binary
5. further imporve the outlier pick procedure.