Add color options, bump minor version

lib/options.h

@@ -0,0 +1,13 @@
+#ifndef _OPTIONS_H
+#define _OPTIONS_H 1
+
+#include <stdint.h>
+
+typedef uint8_t rgb_color_t[3];
+
+typedef struct mazeoptions {
+    rgb_color_t wall_color;
+    rgb_color_t background_color;
+} mazeoptions_t;
+
+#endif // !def(_OPTIONS_H)