New features: 1. add event list to Measurement class 2. add bone age class 3. refactor hard-coded measurement methods to constants 4. add new constants 5. add comments and reorganise functions
2.3.5
New feature added by a-wei-0513
2.3.4
refactor to six-centile and nine-centile constants for naming in server
2.3.3
Minimum length and weight revised down following publication in the BBC today of baby born at 25 weeks at 24 cm and 212g discharged at 13 mths from Singapore National University Hospital.