#21 tutorials/t13_TransformObufObufStrm/ slow to compile

[Remi Chateauneu]

tutorials/t13_TransformObufObufStrm/ is much too slow to compile, and the binary is very big too. Several solutions:
- Split this program in two (Easy but there is no benefit for the library itself).
- Try to have more code in .cpp files instead of templates (Maybe by specializing iostream stuff based on char_type and char_traits): This is a prefereable solution because 99% of the time, only 'char' is used. It should help for other test programs too.

[Remi Chateauneu]

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There is a general compilation speed-up in release 0.0.19.

[Remi Chateauneu]

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Much progress was done with release 0.0.18.