Add explanation of differences between object and non-object data types #132
Description
Is your feature request related to a problem? Please describe.
In the first paragraph of chapter 3, the book states that all basic data types in Python are objects, and that this is not the case for Java basic data types. This paragraph kind of explains what this means, but I found it a little unclear.
Describe the solution you'd like
Explain object and non-object basic data types in more thorough detail. Non-object data types in particular are unclear.
Describe alternatives you've considered
Remove the elements of this paragraph pointing out this distinction if knowledge of object and non-object data types is not necessary.