Fix fret ruler extension parsing scales

extensions/fablabchemnitz/fret_ruler/scales/coherent49.scl

@@ -0,0 +1,54 @@
+! coherent49.scl
+!
+Generator is the positive root of x^4 - x^2 - 1, Raph, Meta-Sidi, 72&121 temperament sqrtphi <30 35 38 39 ... |
+ 49
+!
+ 30.17385
+ 49.63544
+ 79.80930
+ 99.27089
+ 129.44474
+ 148.90633
+ 179.08019
+ 198.54178
+ 228.71563
+ 248.17722
+ 278.35108
+ 297.81267
+ 317.27426
+ 347.44811
+ 366.90970
+ 397.08356
+ 416.54515
+ 446.71900
+ 466.18059
+ 496.35445
+ 515.81604
+ 545.98989
+ 565.45148
+ 595.62533
+ 615.08693
+ 645.26078
+ 664.72237
+ 694.89622
+ 714.35782
+ 733.81941
+ 763.99326
+ 783.45485
+ 813.62870
+ 833.09030
+ 863.26415
+ 882.72574
+ 912.89959
+ 932.36119
+ 962.53504
+ 981.99663
+ 1012.17048
+ 1031.63207
+ 1061.80593
+ 1081.26752
+ 1111.44137
+ 1130.90296
+ 1150.36456
+ 1180.53841
+ 2/1