Fixed error. Added more comments. Added functions to set version, error correction, module size, image type. Started cleaning code.
Cleaned code. Added exceptions to replace trigger_error.
Added exception for unknown image function. Fixed error.
Propose a two-step modification. Code-style/cleaning are massive changes...
More code-style removal.
Added constant for image type. Replaced LEVEL_L... by LEVEL_LOW.
Merge pull request #5 from libeo/api-correction

Public API modifications