4.0.7

JAR file names have changed:

• the suffix 'with-dependencies' disappears,
• the suffix '-no-dep' (for no dependencies) appears.

This should intends to clarify the selection for new comers.

Add a PayPal button for donations.

Move to Ibex-2.6.5.

Major features:

• Revamp Settings: no default method anymore, add setters. A concrete class DefaultSettings provides
  the default behavior.
• IViewFactory.intScaleView now manages negative constants,
• IViewFactory.intAffineView is now available
• add new constraint for mixed linear equation (over real/int variables and double/int coefficients)
• Dow/WDeg now manages variables in a bipartite set (instantiated variables are swaped)
• Assert that a propagator that is passive is not allowed to filter anymore
• An exception is thrown when a sum (or scalar) constraint is candidate for integer over/underflow (an alternative should be provided later)
• BoolVar now handles modifications in different way (may impact performances)
• Propagation engine has changed: no alternative to seven-queue one anymore + simplification of code (may impact performances)
• add new relation expression ift(e1,e2)

Deprecated API (to be removed in next release):

• Model.set(Settings) is deprecated. Now settings are declared in the Model constructor.
• Settings.debugPropagation() is deprecated. There is no alternative.

Closed issues and pull requests:

#527, #564, #569, #576, #578, #581, #586