added announcement for hard workout

rowers/utils.py

@@ -139,12 +139,17 @@ def isbreakthrough(delta,cpvalues,p0,p1,p2,p3,ratio):
   pwr = abs(p0)/(1+(delta/abs(p2)))
   pwr += abs(p1)/(1+(delta/abs(p3)))
 
+  dd = 0.25*(ratio-1)
+  pwr2 = pwr*(1+dd)
+
   pwr *= ratio
 
+  
   delta = delta.values
   cpvalues = cpvalues.values
 
   res = np.sum(cpvalues>pwr)
+  res2 = np.sum(cpvalues>pwr2)
 
   btdf = pd.DataFrame(
     {
@@ -158,4 +163,4 @@ def isbreakthrough(delta,cpvalues,p0,p1,p2,p3,ratio):
   btdf.sort_values('delta',axis=0,inplace=True)
 
   
-  return res>1,btdf
+  return res>1,btdf,res2>1