Add change note.

Author: Max Schaefer

change-notes/1.24/analysis-go.md

@@ -4,8 +4,9 @@
 
 * Alert suppression can now be done with single-line block comments (`/* ... */`) as well as line comments (`// ...`).
 * Analysis of flow through fields has been improved.
-* More sources of untrusted input as well as vulnerable sinks are modelled, which may lead to more results from the security queries.
+* Detection of test code has been improved. LGTM will not show alerts in test code by default.
 * Go 1.14 library changes have been modeled.
+* More sources of untrusted input as well as vulnerable sinks are modelled, which may lead to more results from the security queries.
 
 ## New queries