30158
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10723 Use Opal for semantic analisys in suggestions
https://pharo.fogbugz.com/f/cases/10723
10707 Instance variable #askOkToClose is duplicated in WindowModel (already
defined in ComposableModel)
https://pharo.fogbugz.com/f/cases/10707
Diff information:
http://smalltalkhub.com/mc/Pharo/Pharo30/main/Spec-Widgets-MarcusDenker.184.diff
http://smalltalkhub.com/mc/Pharo/Pharo30/main/SmartSuggestions-MarcusDenker.81.diff