Added unility funcs to remove dependency

src/UtilityFunctions.jl

@@ -0,0 +1,25 @@
+geometric_mean(a::Number, b::Number) = √(a*b)
+
+function find_under_and_over(a::Number, possible_values::Array)
+    possible_series_sorted = sort(possible_values)
+    i, j = 1, 2
+        while !(possible_series_sorted[i] ≤ a ≤ possible_series_sorted[j])
+            i+=1; j+=1
+        end
+    return possible_series_sorted[i], possible_series_sorted[j]
+end
+
+function norm_to_between_100_and_1000(val::Number; return_OOM=true)
+    power_of_10 = 0.0
+    while val > 1000
+        val/=10; power_of_10 += 1
+    end
+    while val < 100
+        val*=10; power_of_10 += -1
+    end
+    if return_OOM
+        return val, power_of_10
+    else
+        return val
+    end
+end