Implemented log levels

Created a package and asdf system definition

Screen is now regularly updated, even without user input.

Introduced multithreading.

Added README.md

Wrote (break-lines) function in `util.lisp'

Fixed display bugs

Splash screen is now displayed at game start.

Major rearrangement, moved all gameplay data to `data.lisp'

Nouns with leading vowels now get the correct article.

Worked on items and biomes

Added other panels to UI.

Fixed scoping issue with *world*

Changed some item definitions and other small changes.

Worked on world map creation

Slimmed down util.lisp

Moved output to worlds folder

Added license and imported util.lisp