Update master_changes.md

master_changes.md

@@ -60,6 +60,7 @@ users)
 ## Source
 
 ## Lint
+  * Add warning 69: Package name in variable in string interpolation contains several '+' [#5840 @rjbou]
 
 ## Repository
 
@@ -136,7 +137,7 @@ users)
 ### Tests
   * Add init scripts tests [#5864 @rjbou]
   * Add test for init OCaml predefined eval variables and their format upgrade [#5829 @rjbou]
-  * Add a test testing showing the current behaviour of opam with variable expention, in particular when the package contains pluses [#5840 @kit-ty-kate]
+  * Add a test testing showing the current behaviour of opam with variable expention, in particular when the package contains pluses [#5840 @kit-ty-kate @rjbou]
 
 ### Engine
 
@@ -173,6 +174,8 @@ users)
 
 ## opam-format
   * `OpamFile.InitConfig`: add `sys-pkg-manager-cmd` field [#5847 @rjbou]
+  * Split filter_ident_of_string into one function for plain variables and one for string interpolations [#5840 @rjbou]
+  * Expose `OpamFilter.extract_variables_from_string` [#5840 @rjbou]
 
 ## opam-core
   * `OpamStd.Sys`: add `is_cygwin_variant_cygcheck` that returns true if in path `cygcheck` is from a Cygwin or MSYS2 installation [#5843 @rjbou]