Version 6.3

• data directory added
• tests directory added
• 10 new font added
  1. lolie
  2. zakia
  3. batman
  4. lord_of_the_ring
  5. kesia
  6. akila
  7. laurine
  8. bianca
  9. callian
  10. awa
• art_param module changed to params
• art module split into errors, utils, and functions modules
• text_dic1, text_dic2, and text_dic3 renamed to fonts1, fonts2, and fonts3
• art_dic renamed to arts
• decor_dic renamed to decorations
• Fonts, arts, and decorations moved to data directory
• Tests moved to tests directory
• Python 3.5 support dropped #252
• Test system modified
• CONTRIBUTING.md updated
• README.md modified