Install cucumber
Get a behaviour testing suite just working enough to expose a bug in rook
Just enough progress to find the next bug
Fix bug preventing black from having two moves with pawns
Fix another failing test
Fix another failing test
Fix move 2 of scholar's mate
Add test for queen movement
Get the third move of scholar's mate working
Get the next two moves working
Finish off the tests for the scholar's mate
Add cucumber tests to the CI build