A simple audio player with focus on accesibility.

• Text passes all tests for WCAG Color contrasts
• Added enhanced focus-state for pause/play button
• Keyboard controls: Play/pause with spacebar, skip songs with arrows left/right
• Aria-label properties for all key controllers
• Dynamic aria-label on play/pause-button
• Dynamic aria-valuetext on range-input.

• Add options for increasing text-size
• Add animation to show if audio is playing or not
• Keyboard a11y: -- Register if a key is already pressed down, to avoid multiple keydown events (i.e. toggling play/pause on and off indefinitely) -- Register if a key is already pressed down, to avoid strange behaviours when multiple keys are pressed at once -- When progress bar is in focus, arrow keys should cause a time-skip within current track and not skip to next/previous track -- When tracklist is in focus, a user should be able to scroll using arrow keys -- When tracklist is in focus, a user should be able to start playing selected track with enter key

For more details, see todo.md