Change modeline in lisp files add bibliography

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Rename package to packages

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Clean up project main directory

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>