v0.4.0

Changelog

1. Statistical modules:
   1. Clustering
   2. k-NN
   3. GLMNet
   4. Random forest
   5. XGBoost
2. Optimization modules:
   1. Travelling salesman problem
   2. Transportation problem
3. Features list

What's Changed

• feature_01_testing by @bdiptesh in #9
• dev_to_feature_02_1 by @bdiptesh in #11
• feature_02_1_to_testing by @MadhuTangudu in #12
• feature_03_to_testing by @MadhuTangudu in #13
• feature_04_05_testing by @bdiptesh in #14
• feature_06_07_testing by @bdiptesh in #15

Full Changelog: https://github.com/bdiptesh/CodeLib/commits/v0.4.0