cogbooks 0.10.0

Convert instructor jupytext-markdown to student notebooks, removing all solutions

The idea of using jupytext for CogWorks is this: Editing notebooks is painful. Doing version control on notebooks is painful. Giving students notebooks is great. So, as instructors, we will develop all of our material in markdown files and then we will use cogbooks to convert our markdown files to jupyter notebooks.

What is great about this is, cogbooks introduces special markdown delimiters that permit instructors to include solutions and instructors-eyes-only comments in a markdown file, so that the file contains the full solutions. cogbooks will then excise these sections when it converts the instructor-markdown files to student-notebooks.