c-list: re-import git-subtree for 'src/c-list'

git subtree pull --prefix src/c-list git@github.com:c-util/c-list.git main --squash

src/c-list/NEWS.md

@@ -1,17 +1,15 @@
 # c-list - Circular Intrusive Double Linked List Collection
 
-## CHANGES WITH 4:
+## CHANGES WITH 3.1.0:
 
         * The minimum required meson version is now 0.60.0.
 
         * New function c_list_split() is added. It reverses c_list_splice()
           and thus allows to split a list in half.
 
-        * TBD
+        Contributions from: David Rheinsberg, Michele Dionisio
 
-        Contributions from: David Rheinsberg
-
-        - TBD, YYYY-MM-DD
+        - Brno, 2022-06-22
 
 ## CHANGES WITH 3:
 

src/c-list/meson.build

@@ -6,7 +6,7 @@ project(
         ],
         license: 'Apache',
         meson_version: '>=0.60.0',
-        version: '3.0.0',
+        version: '3.1.0',
 )
 major = meson.project_version().split('.')[0]
 project_description = 'Circular Intrusive Double Linked List Collection'