Book: improved grammar and readability
There were a few strange grammatical quirks such as commas when a comma isn't called for.
GTK is an object-oriented framework.
It is written in C, which does not support object-orientation out of the box.
-That is why, GTK relies on the GObject library to provide the object system.
+That is why GTK relies on the GObject library to provide the object system.
-We already learned, that `gtk-rs` maps GObject concepts like inheritance and interfaces to Rust traits.
-In this chapter we will additionally find out:
-- How memory of GObjects is managed.
-- How to create our own GObjects via subclassing.
-- How to deal with generic values.
-- How to use properties.
-- How to emit and receive signals.
+We have already learned that `gtk-rs` maps GObject concepts, like inheritance and interfaces, to Rust traits.
+In this chapter we will learn:
+- How memory of GObjects is managed
+- How to create our own GObjects via subclassing
+- How to deal with generic values
+- How to use properties
+- How to emit and receive signals
