Chapter 11 further issues

[codeZeilen]

Unsolved from #67

S6. Exercises vs. only code descriptions

• not really a problem but it feels kind of inconsistent
• some provided code snippets come with a request to define / update etc. them oneself (identified by a squeak cat head before them). (E.g. Method 11.4) Others come with an description and saying how things can be done. (E.g. Method 11.5). I suppose the ones without an exercise aren't really necessary to follow the tutorial? But as this chapter feels like a - try every example - tutorial this for me personally just appeared a bit inconsistent.

S10. Not using accessor methods

• In Method 11.29 instance variables are set directly and not via accessor methods, which especially for faces: and dieValue: is weird, because we define those methods later on (and they do sensible sanity checks)