Tidy up includes

Remove includes that are no longer required and add those that ought
to be there for best practices (where they were previously working
anyway because their dependencies include the appropriate headers)

Author: saxbophone

saxbospiral/plot.c

@@ -1,4 +1,3 @@
-#include <stdint.h>
 #include <stdlib.h>
 
 #include "saxbospiral.h"

saxbospiral/serialise.c

@@ -3,6 +3,7 @@
 #warning "Please compile this code for a target with 64-bit words or greater."
 #endif
 
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

saxbospiral/solve.c

@@ -4,9 +4,9 @@
 #endif
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
-#include <stdlib.h>
 
 #include "saxbospiral.h"
 #include "plot.h"

saxbospiral/solve.h

@@ -1,7 +1,7 @@
 #ifndef SAXBOPHONE_SAXBOSPIRAL_SOLVE_H
 #define SAXBOPHONE_SAXBOSPIRAL_SOLVE_H
 
-#include <stdbool.h>
+#include <stdint.h>
 
 #include "saxbospiral.h"
 

sxp.c

@@ -1,4 +1,5 @@
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 

sxp.h

@@ -2,8 +2,8 @@
 #define SAXBOPHONE_SAXBOSPIRAL_SXP_H
 
 #include <stdbool.h>
+#include <stddef.h>
 #include <stdio.h>
-#include <stdlib.h>
 
 #include "saxbospiral/saxbospiral.h"