[ changelog ] Update the changelog after the 0.7.0 release

CHANGELOG.md

@@ -4,6 +4,19 @@
 
 ### Language changes
 
+### Backend changes
+
+#### Chez
+
+* `Lazy` and `Inf` values are *weakly* memoised. That is, once accessed, they are allowed
+  to be not re-evaluated until garbage collector wipes them.
+  This change requires Chez with version >= 9.5.9, because of fixed bug in Chez GC.
+
+#### Racket
+
+* `Lazy` and `Inf` values are *weakly* memoised. That is, once accessed, they are allowed
+  to be not re-evaluated until garbage collector wipes them.
+
 ### Compiler changes
 
 ### Library changes
@@ -74,19 +87,12 @@
 * Non-recursive top-level constants are compiled to eagerly evaluated
   constants in Chez Scheme.
 
-* `Lazy` and `Inf` values are *weakly* memoised. That is, once accessed, they are allowed
-  to be not re-evaluated until garbage collector wipes them.
-  This change requires Chez with version >= 9.5.9, because of fixed bug in Chez GC.
-
 #### Racket
 
 * FFI declarations can now specify which `require` to perform, i.e. which
   library to load before executing the FFI.
   The syntax is `scheme,racket:my-function,my-library`.
 
-* `Lazy` and `Inf` values are *weakly* memoised. That is, once accessed, they are allowed
-  to be not re-evaluated until garbage collector wipes them.
-
 #### Node.js/Browser
 
 * Generated JavaScript files now include a shebang when using the Node.js backend