* start pt-br translation on regression section
* add pt-br translation on tools section of regression lesson
* add pt-br translation on data section of regression lesson
* add pt-br translation on linear section of regression lesson
* add pt-br translation on logistic section of regression lesson
* add syntax and others types of fixes on regression lesson
* add url fixes on regression lesson
* add syntax fixes on regression lesson
* add syntax fixes on regression lesson
* starting classification lesson translated to pt-br
* add translation pt-br to summay and introduction section of classification lesson
* add translation pt-br to classifiers 1 section of classification lesson
* add translation pt-br to classifiers 2 section of classification lesson
* add translation pt-br to Applied section of classification lesson
* Translate 1.1 (Intro to ML) to Korean
* Translate 1.2 (History of ML) to Korean
* Translate 1.3 (Fairness) to Korean
* Translate 1.4 (Techniques of ML) to Korean
* Translate 2.1 (Tools) to Korean
* Translate 2.2 (Data) to Korean
* Translate 2.3 (Linear) to Korean
* Translate 2.4 (Logistic) to Korean
* Translate 3.1 (Web App) to Korean
* Translate 4.1 (Intro to Classification) to Korean
* Translate 4.2 (Classifiers 1) to Korean
* Translate 4.3 (Classifiers 2) to Korean
* Translate assignment 4.4 (Applied) to Korean
* Translate assignment 5.1 (Visualize) to Korean
* Translate assignment 5.2 (K-Means) to Korean
* Translate assignment 6.1 (Intro to NLP) to Korean
* Translate assignment 6.2 (Tasks) to Korean
* Fix minor typo in assignment 6.2 (Tasks) Korean translation
* Translate assignment 6.3 (Translation Sentiment) to Korean
* Translate assignment 6.4 (Hotel Reviews 1) to Korean
* Translate assignment 6.5 (Hotel Reviews 2) to Korean
* Translate assignment 7.1 (Intro to Time Series) to Korean
* Remove English title from assignment 7.1 (Intro to Time Series) in Korean
* Translate assignment 7.2 (ARIMA) to Korean
* Translate 8.1 (Q-Learning) to Korean
* Translate assignment 8.2 (Gym) to Korean
* Translate assignment 9.1 (Applications) to Korean