Update to version 1.1.0

[Pablo-Gonzalez-Calderon]

• Added boxed option in title styles
• Added boxed-align option in title styles
• Added sep-thickness option for title and footer
• Refactored repository's files layout
  • Create a new file containing functions that will draw the title, body and footer, making possible the future developement of custom style functions for those parts of the showybox, like now with the boxed option.