Got the meat of spinlocks on one spread

fd462b6a · Austin Clements · 6a6bf37c · fd462b6a
--- a/runoff.spec
+++ b/runoff.spec
@@ -17,6 +17,7 @@ even: main.c

 # spinlock.h either
 # spinlock.c either
+right: spinlock.c  # mild preference
 even: proc.h  # mild preference

 # goal is to have two action-packed 2-page spreads,