Revert "Getting rid of Gondwana -- not very useful and not very well written right now."

This reverts commit 3d02f0d32cf1b1492651e0a8454a49f7715b4221.
Better naming for Gondwana and getting rid of some errors.
Fixing TopperTest
Implementing connected more efficiently.
Adding the slice operation and large quantities of utilities.
Getting rid of Gondwana again because it is useless.
Adding a self-interrupt mechanism.
Better exception handling in Player.
Piping down the end of the game more correctly in player, simplifying symmetrization -- Fortre still needs to be dramatically simplified.