update warnings at tops of chapters

Author: hjwp

chapter_17_second_deploy.asciidoc

@@ -14,6 +14,17 @@ NOTE: At this point I want to say a huge thanks to Andrew Godwin and the whole
     drop it altogether.  Thanks for all the great work, gang!
 
 
+.🚧 Warning, Content not updated
+*******************************************************************************
+
+This chapter has not been rewritten as part of the third edition.
+
+By all means refer back to <<chapter_11_ansible>>
+and try and do a deployment,
+but otherwise, go ahead and check out <<chapter_18_spiking_custom_au,the next chapter>>, which has been (mostly) updated.
+
+*******************************************************************************
+
 
 Staging Deploy
 ~~~~~~~~~~~~~~

chapter_18_spiking_custom_auth.asciidoc

@@ -1,6 +1,16 @@
 [[chapter_18_spiking_custom_auth]]
 == User Authentication, Spiking, and [keep-together]#De-Spiking#
 
+.🚧 Warning, Recently Updated
+*******************************************************************************
+
+This chapter has recently been updated for the third edition.
+Its listings now use Django 4.2 and Python 3.12.
+
+It's still an early draft though,
+so please send feedback!  [email protected]
+
+*******************************************************************************
 
 ((("authentication", id="Adespike18")))
 Our beautiful lists site has been live for a few days, and our users are

chapter_mocking.asciidoc

@@ -1,6 +1,18 @@
 [[chapter_mocking]]
-Using Mocks to Test External Dependencies or Reduce Duplication
----------------------------------------------------------------
+== Using Mocks to Test External Dependencies or Reduce Duplication
+
+*******************************************************************************
+🚧 Warning, this Chapter is the 2e version, and uses Django 1.11
+
+This chapter and all the following ones are the second edition versions, so they still use Django 1.11, Python 3.8, and so on.
+
+To follow along with this chapter, it’s probably easiest to reset your code to match my example code as it was in the 2e, by resetting to: https://github.com/hjwp/book-example/tree/chapter_mocking
+
+And you should also probably delete and re-create your virtualenv with * Python 3.8 or 3.9 * and Django 1.11 (pip install "django <2")
+
+Alternatively, you can muddle through and try and figure out how to make things work with Django 4 etc, but be aware that the listings below won’t be quite right.
+*******************************************************************************
+
 
 ((("Django framework", "sending emails")))((("emails, sending from Django")))((("mail.out box attribute")))
 In this chapter we'll start testing the parts of our code that send emails.