* Update free-programming-books-subjects.md
Add Julia Data Science (HTML) book under data science
* Update free-programming-books-subjects.md
Added license info in Julia Data Science
* Update free-programming-books-subjects.md
Removed trailing slash from Julia Data science entry
* Adds Thinking python vietnamese translation
Adds Thinking python vietnamese translation
* Correct empty lines between sections
Correct empty lines between sections
* Update books/free-programming-books-vi.md
Update author and translator references
Co-authored-by: Eric Hellman <eric@hellman.net>
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Co-authored-by: Eric Hellman <eric@hellman.net>
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