Implement plan, qpi and metric constructors

- separate runner from `plan` and move `plan` to `loader`
- rename `algorithm` to `formula`
- use `numpy` for formulas
- update sample qpi and metrics

Change-Id: I3131ca79907376f2de31d6cb920bd7d0230664a6
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

1 files changed, 2 insertions, 1 deletions

diff --git a/tests/conftest.py b/tests/conftest.py
index f1ec91fb..7acb75e6 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -8,9 +8,10 @@
 ##############################################################################
 
 from os import path
+
 import pytest
 
-from qtip.runner.plan import Plan
+from qtip.loader.plan import Plan
 
 
 @pytest.fixture(scope='session')