update riskMetrics
Merge branch 'pliDEV' of https://github.com/pli1988/portfolioFactory into pliDEV
refactor and user interface
cleanup
cleanup 2
Add tests for riskMetric
add TK note
update horizon checks in retMetrics and add unittests
add str test for metrics
update retMetrics
merge with imDev
cleanup
merge with imDev
merged with pliDev and solved conflicts
asdsad Revert "merged with pliDev and solved conflicts"

This reverts commit 7d315d82d0c107db75d92da1c57de6c26984742c, reversing
changes made to 5e8491050f8cbaac0f55628a3ebb36068cc0e96a.