stdlib/strings: Added view on the chars of String and Buffer class to abstract them from the Collection model

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/strings: Removed from_substring constructor (replaced by with_infos)

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/strings: Removed usage of Strings as SequenceRead by using chars.

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/strings: Temporary removal of Ropes from stdlib.
stdlib/strings: Detached String from the collection block.

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/strings: Removed module string, splitted in text and flat for flat strings

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/strings: Added support for ropes in the new String model

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
stdlib/text: Added test for the methods of Text and its subclasses

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>