[Feature] - Add the variable(MIGO_TMP_SEPARATOR=#MIGO#) for tempary usage between mapper and reducer
[Refactor] - Modify the merge logic to support the mapping of one-to-one and one-to-many
Merge branch 'master' of github.com:migocorp/athena
[Feature] - Add the NES module to integrate the whole tasks
[Feature] - Add the keep_temp variable to contronl the deletion of destination or not
[Fix] - Add the missing parameters
[Fix] - Correct the non-ascii display when using join function
[Fix] - Correct the encoding of output
[Feature] - create new file adjusted_interval.py
[Code Info] - remove useless code
[Refactor] - add group_interval in parameter of output
[Feature] - Add the first and last purchaing date in the ending for every records
[Feature] - Add Pearson Correlation Coefficient Class
[Feature] - Add a module to calculate the mean and std based on the given key value
[Test] - Add the testing data for the class, MeanStd
[Fix] - Correct the logic error and upload the testing data
Merge pull request #13 from migocorp/adjusted_interval

Adjusted interval
[Code Info] - The better naming rule for configuration file
[Feature] - Add the Adjusted Purchasing Interval in the NES task
[Fix] - If the list contains many and same values, the output is wrong