Multinmrfit

Changelog
- improved interface
- loading process file was limited to 200Mo, now set to 4Go
- fix bugs in data export
- fix adaptive bounds for batch processing
- better scaling factor to stabilize convergence

Features:
- check if a new version has been released
- add "Differential evolution" method to refine initial parameters before L-BFGS-B optimization

Fix:
- update constraints
- update GUI
- data export
- data visualization

Fix:
- update constraints (to be finished)
- first spectrum was not the right one
- data visualization

New features:
- remove empty rows in pseudo 2D spectra
- export simulated spectra

Initial release