some alphabetizing
Merge pull request #576 from engstrom/master

Some Alphabetizing
Added python books
Added Building Blocks for Theoretical Computer Science
Añadido libro de Coffeescript en español
actualizado para que funcione el hyperlink
Update free-programming-books-es.md
Update free-programming-books-bg.md

Допълнение на настоящия списък с книги за програмиране на български език.
Merge pull request #581 from haripetrov/patch-1

Update bg
Merge pull request #580 from Kikobeats/patch-1

Añadido libro de Coffeescript en español
Merge pull request #579 from colegleason/master

Added Building Blocks for Theoretical Computer Science
Merge pull request #578 from casual-passer/master

Added python books
Some alphabetizing.
Fixes typos.
Some alphabetizing.
Merge pull request #582 from jwworth/master

Some alphabetizing and typos
Added "A Guide to Python's Magic Methods"

I don't know whether this strictly meets your criteria of a "book". I'll let you decide.
16000 star in 3 month
Merge pull request #583 from sugarjig/patch-1

Added "A Guide to Python's Magic Methods"