Use \Hoa\Iterator.
Update API documentation.
Add coverage criteria (normal and exceptional).
[auto] Merge from Praspel

    • #dcd6e1e — Use \Hoa\Iterator. (Ivan Enderlin, 2013-05-01)
    • #9b38d62 — Update API documentation. (Ivan Enderlin, 2013-05-01)
    • #6389899 — Add coverage criteria (normal and exceptional). (Ivan Enderlin, 2013-05-01)

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Merge remote branch 'library-praspel/master'