Refactoring in main program code made
Attempt to make CubicInterpolant independent of coordinate name
Camera now won't move unless drag started on canvas
Camera movement is now limited by vertical boundaries
'markup' in Build method is now replaced by 'nodes' fields 'position' & 'value'
Add a proper title (plateau) to the app
get_function argument is now supposed to be a string not an input element
Objects in array given as argument to Build method is now have 'position', 'value' fields
particleSystem is now always created over again
Default values for count of nodes changed from 50 to 11 (odd numbers are preferred)
Merge pull request #6 from mr-m/master

Camera improvements made