Add comments to spiral generation code (surrounding v3, which is where the most significant performance is gained). Change gnal_v2 to use library gnal_v2.scad

100ft_v2/gnal_100ft.scad

@@ -1,6 +1,6 @@
 //V2
 
-include <../libraries/gnal.scad>;
+include <../libraries/gnal_v2.scad>;
 
 SPOKE_COUNT = 24;
 PART="";

50ft_v2/gnal_50ft.scad

@@ -1,6 +1,6 @@
 //V2
 
-include <../libraries/gnal.scad>;
+include <../libraries/gnal_v2.scad>;
 
 $fn = 20;
 

spiral/spiral_3.scad

@@ -5,6 +5,14 @@ $fn=FN;
 
 include <../libraries/path_extrude.scad>;
 
+/**
+ * This approach is the fastest by far (!!!). Unlike spiral_4, this does not adjust
+ * the $fn value as the spiral grows in diameter, but simply uses it as a constant
+ * for all spirals. This means that the innermost spiral will have n=$fn facets and 
+ * the outermost facets will have the same number. Need to find a hybrid between
+ * this and #4.
+ **/
+
 module spiral (count = 40, start_d = 48, spacing = 2.075) {
     
     //$fn = 80;

spiral/spiral_4.scad

@@ -5,7 +5,9 @@ $fn=FN;
 
 include <../libraries/path_extrude.scad>;
 
-//Distinction from v3: use of for loop and union to join rotations
+/**
+ * Distinction from spiral_3: use of for loop and union to join rotations.
+ **/
 
 module spiral (count = 40, start_d = 48, spacing = 2.075) {
     facet_size = 30;

spiral/spiral_5.scad

@@ -5,7 +5,10 @@ $fn=FN;
 
 include <../libraries/path_extrude.scad>;
 
-//Distinction from v4 compressed spiralPath generation into single line
+/**
+ * Distinction from v4 compressed spiralPath generation into single line. This refactor
+ * required repeating calculations that were assigned to variables in spiral_4. 
+ **/
 
 module spiral (count = 40, start_d = 48, spacing = 2.095) {
     facet_size = 10;