A set of tutorials, for tr-alph.

LICENSE:

To the extent permitted by law, you can use, study, modify, re-distribute, and
re-license, these set of tutorials, with any documentation license approuved by the fsf.
And the pieces of code included with any licence standardised by the spdx.

New Files:
- tr_alph.ml
- tr_alph.mli

Tut:   [ 01 ; 02 ; 03 ; 04 ; 05 ; 06 ]