* 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.
* Add "Symfony 5: The Fast Track" book (en)
* Add "Symfony 5: The Fast Track" book (es)
* Add "Symfony 5: The Fast Track" book (de)
* Add "Symfony 5: The Fast Track" book (ar)
* Add "Symfony 5: The Fast Track" book (fa)
* Add "Symfony 5: The Fast Track" book (ja)
* Add "Symfony 5: The Fast Track" book (ru)
* Add "Symfony 5: The Fast Track" book (it)
* Add "Symfony 5: The Fast Track" book (nl)
* Add "Symfony 5: The Fast Track" book (pl)
* Add "Symfony 5: The Fast Track" book (pt_BR)
* Add "Symfony 5: The Fast Track" book (ro)
* Add "Symfony 5: The Fast Track" book (zh_CN)
* Add "Symfony 5: The Fast Track" book (fr)
* Remove redundant line breaks
* remove-dead-links
remove dead urls (404's) and sections that no longer contain resources
* remove one more dead link
Remove an additional link that resolved, but contained no information
* remove indexes with no links
* Update free programming books it
* UPDATE free-programming-books in italian
* Added year of pubblication of the js course
* Update year of pubblication in italian
* Added author to js course
* Removed trailing slash from URL
* Update README
* Update Readme with CC BY licence
* DRY: link to LICENSE.md, not to CC. also spelling
