Move "newtype" into the "quirks"

book/src/01-quirks/04-newtype.md

@@ -1,9 +1,7 @@
 # Newtype
 
-There's one thing I want to get out of the way near the start of the book and it
-didn't really have a good fit anywhere else in the book so it goes right here.
-
-We're talking about the "Newtype Pattern"!
+There's a great Zero Cost abstraction that we'll be using a lot that you might
+not already be familiar with: we're talking about the "Newtype Pattern"!
 
 Now, I told you to read the Rust Book before you read this book, and I'm sure
 you're all good students who wouldn't sneak into this book without doing the

book/src/SUMMARY.md

@@ -6,12 +6,12 @@
   * [Book Goals and Style](00-introduction/02-goals_and_style.md)
   * [Development Setup](00-introduction/03-development-setup.md)
   * [Hello, Magic](00-introduction/04-hello-magic.md)
-  * [Newtype](00-introduction/05-newtype.md)
-  * [Help and Resources](00-introduction/06-help_and_resources.md)
+  * [Help and Resources](00-introduction/05-help_and_resources.md)
 * [Quirks](01-quirks/00-index.md)
   * [No Std](01-quirks/01-no_std.md)
   * [Fixed Only](01-quirks/02-fixed_only.md)
   * [Volatile Destination](01-quirks/03-volatile_destination.md)
+  * [Newtype](01-quirks/04-newtype.md)
 * [Concepts](02-concepts/00-index.md)
   * [CPU](02-concepts/01-cpu.md)
   * [BIOS](02-concepts/02-bios.md)