Add exercise 1 base file

Simple multiple `print` statements exercise
Add ex1 study drills 1

Add another line of `print` statement
Add ex1 study drills 2

Commented most of the `print` statements, printing only one line
Add Exercise 3 README file

Contains some explanation on the current exercise
Add Exercise 3 main python file

On some numbers and math
Add Ex3 Study Drills scripts

1. Commenting each lines
2. Custom made python basic calculation ability
3. Using float number
Update README file

Now with the names of the exercises
Merge branch 'feature/ex3' into develop
Update main README file

Exercise 3 is now completed
Add Exercise 2 files, readme and script

Introduction to comment using hash symbol `#`
Update main README file
Merge branch 'feature/ex2' into develop
Update main README file, current release
Merge branch 'release/0.1'