extras/courses: Add GTx CS1301 Course Sequence (ossu#524)

GTx CS1301, "Computing In Python" is proposed as a supplemental course in the OSSU curriculum and as a potential future candidate for the Introduction to Computer Science course. It is an online-adapted version of the on-campus Introduction to Computing course for Georgia Tech computer science students. The online version is comprised of four parts, delivered on-demand via edX. The course is self-paced with 16 weeks of effort, and is 100% free to audit with all materials included. It covers all introductory CS topics discussed in MIT 6.00.1x from a language-agnostic perspective, while providing additional instruction and support in learning Python as a language. Students who complete this course will have an understanding of basic CS topics **and** a working knowledge of Python 3 they can immediately apply to interesting problems.

extras/courses.md

@@ -12,6 +12,10 @@ Courses | Duration | Effort
 [Introduction to Computer Science (Udacity)](https://www.udacity.com/course/intro-to-computer-science--cs101)| 7 weeks | 10-20 hours/week
 [An Introduction to Interactive Programming in Python (Part 1)](https://www.coursera.org/learn/interactive-python-1)| 5 weeks | -
 [An Introduction to Interactive Programming in Python (Part 2)](https://www.coursera.org/learn/interactive-python-2)| - | -
+[Computing In Python, Part I: Fundamentals and Procedural Programming](https://www.edx.org/course/computing-in-python-i-fundamentals-and-procedural-programming-0) | 5 weeks | 10 hours/week
+[Computing In Python, Part II: Control Structures](https://www.edx.org/course/computing-in-python-ii-control-structures-0) | 5 weeks | 10 hours/week
+[Computing In Python, Part III: Data Structures](https://www.edx.org/course/computing-in-python-iii-data-structures-0) | 5 weeks | 10 hours/week
+[Computing In Python, Part IV: Objects & Algorithms](https://www.edx.org/course/computing-in-python-iv-objects-algorithms-0) | 5 weeks | 10 hours/week
 [Programming Basics](https://www.edx.org/course/programming-basics-iitbombayx-cs101-1x)| 9 weeks | 8 hours/week
 [Object-Oriented Programming](https://www.edx.org/course/object-oriented-programming-iitbombayx-cs101-2x)| 4 weeks | 8 hours/week
 [Object-Oriented Programming with Java (Part 1)](http://mooc.fi/courses/2013/programming-part-1/)| 6 weeks | -