Fix overlong line of code in Chapter 4
Fix positioning of paragraph link for code snippets

So that it is actually possible to click them
Integrate tech editing for Chapter 13
Integrate tech editing for Chapter 14
Fix programming mistake in Chapter 9

Issue #124
Also update output of example fixed by issue #124
Removing missplaced ")".
Integrate editing for Chapter 16
Proofread chapters 1 to 4
Add syntax highlighting to epub target

Closes #125
Use Amazon link to order
Add introductory sentences for some diagrams in Chapter 2
Fix confusion about table offsets in Chapter 4

Issue #128
Merge remote-tracking branch 'upstream/master'

Conflicts:
	09_regexp.txt
Fix typo