Address review comments and add missing notes.

Author: taus-semmle

change-notes/1.22/analysis-python.md

@@ -20,12 +20,15 @@ if seq:
 Instances of the `Parameter` and `ParameterDefinition` class now have a `getAnnotation` method that returns the corresponding parameter annotation, if one exists.
 
 ### Improvements to the Value API
-The Value API has been extended with classes representing functions, classes, tuples, and other types.
+- The Value API has been extended with classes representing functions, classes, tuples, and other types.
+
+- `Value::forInt(int x)` and `Value::forString(string s)` have been added to make it easier to refer to the `Value` entities for common constants.
 
 ### Other improvements
 
-- Short flags for regexes (e.g. `re.M` for multiline regexes) are now handled correctly.
+- Short flags for regexes (for example, `re.M` for multiline regexes) are now handled correctly.
 - Modules with multiple import roots no longer get multiple names.
+- A new `NegativeIntegerLiteral` class has been added as a subtype of `ImmutableLiteral`, so that `-1` is treated as an `ImmutableLiteral`. This means that queries looking for the use of constant integers will automatically handle negative numbers.
 
 ## New queries