v1.4 push_swap working with a list until 7 numbers

V1.4 Push Swap

Now working to sort a list with:

• from 2 until 7 numbers

Bugs just fixed:

• Now the program exits if the given number is outside the range of int_min and int_max

Project in TDD (Test Driven Development)

• 48 automated tests with 150 assertions

Still TODO:

• make test for a list with 8 or more numbers
• make test for negative numbers, at the end #12
• make test for double or more signs (-- +++)

What's Changed

• 10 bugfixargv validation range by @biralavor in #11

Full Changelog: v1.3...v1.4