refs #6 Level nine and release version two
 * Level nine is done as of this revision.
 * Story moved 0.1 point forward.
 Note about story points:
  Each story point has approximatly 8 hours working time value,
  minimum story point unit is 0.1(~= an hour time).
  in another words one story point is equals to 0.8 ~= 8 hours time.
  having said that, I prefer simpler calculation e.g. 0.3 + 0.7 = 1
  not 1.2. So you also could say each story point has 10 hours value.