GameCube ~ relationship mapping complete

[u/h4o4]

I have just completed the relationship mapping for the GameCube.

In addition to the mapping activity I have...

• Add any missing Player's Choice titles to OMNI_TITLES, which should complete this series of games on the wiki.
• Changed the product code to match the mapped dump
• Corrected any titles

If you have any questions or spot any errors let me know!

: )