renamed:    Lesson 1 | Introduction to pandas.ipynb -> lessons/Lesson 1 | Introduction to pandas.ipynb
	new file:   lessons/Lesson 2 | Working with files.ipynb
	renamed:    Lesson 1: Introduction to pandas -> plaintext/Lesson 1: Introduction to pandas
	renamed:    Lesson 2: Working with files -> plaintext/Lesson 2: Working with files
	renamed:    Lesson 3: Basic database functions -> plaintext/Lesson 3: Basic database functions
	renamed:    Lesson 4: Working with dates and times -> plaintext/Lesson 4: Working with dates and times
	new file:   special/rini_detention.ipynb