release-4.0.3

Changes:

• added isFitValid() method in Func1D for returning MINUIT FunctionMinimum.isValid() result.
• user can change the format string used to display function parameters in stat box.
• Fixed the issue with TDirectory changing dataset name to canonical while saving.
• fixed the crash when GraphErrors is saved without any points
• added dynamic resizing of the event in tdirectory save (there was an issue with saving large 2d histograms)

release v4.0.0

Several improvements.

1. switch from hipo3 to hipo4 for storing data (such as histograms and graphs)
2. removed dependence on JEVIO
3. Directory listing now appears in alphabetical order, easier to find directories in browser
4. removes graphics environment initialization if no canvas is initialized (now no DISPLAY is required in batch mode)
   ... and many more.....