0.2.0

CHANGES:

• changed license to CeCILL-C, for LGPL compatibility
• dropped dependency on biocaml, missing functionalities have been
  imported and adapted
• croquis: plotting functions, several enhancements and bug fixes
• new Amino_acid module
• new Alphabet module
• new Meme module
• Compatible with core v0.15.0
• Improvement in Dataframe parsing