* Added 1 C book and 3 authors.

C
Added 1 new book and 3 missing authors in the list.

* Added a bunch of authors.

C++

* C#

Added an author.

* Added 2 HTML books and 1 format.

* Ordering Change.

* Another One.

* Adds Building Secure & Reliable Systems

* Adds (PDF) mark

* Moves (PDF) mark to after the author

Added R programming resource for program evaluation - Summary and Analysis of Extension Program Evaluation in R (#4794)

check_urls=free-programming-books.md

* Added Flask Documentation

* Update free-programming-books.md
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

Added MDN Django tutorial:  https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django

* Adds The Site Reliability Workbook

* Sorts new book

* Adds back empty line

* added section and a book for blazor

* Update free-programming-books.md
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Update mathematica links

Addresses #3672 for wolfram/mathematica link

* update sonatype eclipse book

* update mysql tutorial link

* update ravichaganti powershell book

* update single devops collective book

* fix mysql tutorial formatting

* reorder mysql 8.0 tutorial

* update leanpub requirements

* include devops collective author

Addresses #3189, updates the WIP version of the standard to the C17/C18 draft. I was hesitant about using a web.archive link but it seems widely accepted (see Wikipedia https://en.wikipedia.org/wiki/C18_(C_standard_revision), and ISO-9899.info http://www.iso-9899.info/wiki/The_Standard)

* added a book for graphics programming

* Update free-programming-books.md
Co-authored-by: NSeth <seth@elypia.org>

* Update free-programming-books.md
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Update free-programming-books.md

* Update alphabetical order

* Added authors

* Update free-programming-books.md

* Added Learning GNU C book -  check_urls=free-programming-books.md

* Added Learning GNU C book - check_urls=free-programming-books.md

* Added 3 Ruby books to en.

* Added 2 Java books to en.

* Added 2 Javascript books to en.

* Added 1 ECMAscript book to en.

* Added 1 PHP book to en.

* Added a bunch of translations.

Added translations of The Hitchhiker’s Guide to Python! in French, Korean, Brazilian Portuguese and Chinese. Also rectified Django entries in chinese.

* Changes in ordering.

As directed by travis-ci

* Minor odering changes

as directed by travis-ci

* Another ordering change.

* And another one.

* Update free-programming-books adding a MATLAB Book

Add MATLAB Notes for Professionals book

* Revert "Update free-programming-books adding a MATLAB Book"

This reverts commit 56537340da39e1f20de2271bc222b2e19bc9415b.

* Add book MATLAB notes for professionals

* Fix the pattern of the MatlabBook
Co-authored-by: NGabriel Oliveira Leite <goliveil@everis.com>

Add a style guide that helped me with angular.js

* Added Portuguese and Italian Translations.

Added Portuguese and Italian Translations of the book Python For Everybody by Dr. Charles Russell Severance

* Update free-programming-books.md

Updated the link to the latest edition.

* Update free-programming-books.md

Updated edition for the book with author and links in three places.

* Update free-programming-books.md

Added Think DSP - Digital Signal Processing in Python.

* Update free-programming-books.md

Added Think Data Structures: Algorithms and Information Retrieval in Java.

* Update free-programming-books.md

Added two new books;
Think C++: How To Think Like a Computer Scientist
Modeling and Simulation in Python

* Minor changes to adhere to Contributing.md

Thanks to @kashirash
Suggested edits to pass travis-ci and respecting markdown formatting.

docs: transfer links for cheatsheets from books page to new cheatsheets page and add css/js cheatsheets (#4557)

* docs: add links for cheatsheets

* docs: remove links for cheatsheets from books page

* Update free-programming-books.md

* removed index.html

* Committed suggested changes
Co-authored-by: NSeth <seth@elypia.org>
Co-authored-by: NSeth <seth@elypia.org>

* Added Blockchain Programming Book

* Added the packt link

* Added a Kotlin Playground

* The Kotlin Playground

* Update free-courses-en.md

Added Flexbox & CSS Grid free video resources to the repo

* Update free-courses-en.md

* Update free-courses-en.md

Removed the trailing slashes from the root domain

* Update free-courses-en.md

Added free Javascript30 course from Wesbos

* Markdown video course

Added free Markdown video course

* Update free-courses-en.md

* Update free-programming-books.md

Added a free markdown resource that covers all the basics concepts

Updated broken Python Programming book link with newer 3.x version check_urls=free-programming-books.md (#4486)

* Add Math for Machine Learning by Marc Peter Deisenroth, A Aldo Faisal, and Cheng Soon Ong

* try to fix build failed

* add PDF at the end of the line

* change the better link

* Update free-programming-books.md

Added in 3 free programming books:
[Haskell Notes for Professionals](https://goalkicker.com/HaskellBook/) (PDF)
[Linux commands Notes for Professionals](https://goalkicker.com/LinuxBook/) (PDF)
[JavaScript Notes for Professionals](https://goalkicker.com/JavaScriptBook/) (PDF)

* Update free-programming-books.md

* Update free-programming-books.md

* Update free-programming-books.md

Add The Joy of Cryptography (2020) book to the mathematics section.

* Update free-programming-books.md

Add Haskell Notes for Professionals

* Update free-programming-books.md

Add Linux commands Notes for Professionals

* Update free-programming-books.md

Add JavaScript Notes for Professionals

* Update free-programming-books.md

* Added books.

* Removed a book.

* Added a book back.

* Added assembly books.

* Removed duplicate books.

* Added a book.

* Update free-programming-books.md

* [Microsoft Technologies 3, including books on Windows Azure, SharePoint, Visual Studio Guide, Windows phone development, ASP.net, etc. collection by Eric Ligman](https://blogs.msdn.microsoft.com/mssmallbiz/2017/07/11/largest-free-microsoft-ebook-giveaway-im-giving-away-millions-of-free-microsoft-ebooks-again-including-windows-10-office-365-office-2016-power-bi-azure-windows-8-1-office-2013-sharepo/)
* [Clever Algorithms](http://www.cleveralgorithms.com/nature-inspired/) - Jason Brownlee
* [CS Unplugged: Computer Science without a computer](http://csunplugged.org/books/)
* [Computer Musings](http://scpd.stanford.edu/knuth/index.jsp) (lectures by Donald Knuth)

by Dr. Charles Severance (University of Michigan)