Remove some useless comments.
* little-mler.sml (LittleMLer.prefixer): Adjust the function in
order to make the test pass, we've to take apart the sexp produced
by ``parse'' since we've to attach the given suffix.
(LittleMLer.waiting_prefixer): We have to take apart the result
otherwise we've to introduce an additional Cons in order to
putting (List combined) onto the result.

* sexp-expressions-tests.sml (SExpressionsTests): Fixed the tests
in order to exercise both the curried both the staged version of
combine_slist.
* sexp-expressions.sml (SExpressions.parse.explode_fragment): add
an explanation comment.
(SExpressions.parse.minify_fraglist): add an explanation comment.
* observations-and-todos.org: add a ``journal'' file in the style
of org-mode!
Add the first steps toward ``Building on blocks''.
* little-mler.sml (LittleMLer.prefixer): Adjust the function in
order to make the test pass, we've to take apart the sexp produced
by ``parse'' since we've to attach the given suffix.
(LittleMLer.waiting_prefixer): We have to take apart the result
otherwise we've to introduce an additional Cons in order to
putting (List combined) onto the result.

* sexp-expressions-tests.sml (SExpressionsTests): Fixed the tests
in order to exercise both the curried both the staged version of
combine_slist.

* sexp-expressions.sml (SExpressions.parse.explode_fragment): add
an explanation comment.
(SExpressions.parse.minify_fraglist): add an explanation comment.

* sexp-expressions/sources.cm: moved the sexp-expressions code in
a dedicated folder with its own sources.cm file for compilation.