No mention of Fluid nor Slots

[mldavis99]

While not so common yet the transition of the class creation template in Calypso to the Fluid style with Slots is not described anywhere. Also, the class creation in figure 6-4 shows the old style with the slots check box instead of the Fluid check box although the Fluid check box is implemented in both Pharo 9 and 10. While this may seem insignificant to a new learner, it did later catch me in the Building Applications with Spec2 book where the Fluid style is shown in some places and the non-fluid style in others.

[Ducasse]

In Pharo 9 fluid was not there. So I hope to have a new and easier version of the book for P12.