Move release related docs to new sub-folder

Author: dstansby

.github/labeler.yml

@@ -110,10 +110,10 @@
   - all:
       - changed-files:
           - any-glob-to-any-file:
-              - 'doc/users/**'
+              - 'doc/release/**'
               - 'galleries/users_explain/**'
           - all-globs-to-all-files:
-              - '!doc/users/next_whats_new/**'
+              - '!doc/release/next_whats_new/**'
 
 "topic: animation":
   - changed-files:

.pre-commit-config.yaml

@@ -8,7 +8,7 @@ exclude: |
     LICENSE|
     lib/matplotlib/mpl-data|
     doc/devel/gitwash|
-    doc/users/prev|
+    doc/release/prev|
     doc/api/prev|
     lib/matplotlib/tests/data/tinypages
     )

doc/conf.py

@@ -57,7 +57,7 @@ def _parse_skip_subdirs_file():
     can make partial builds very fast.
     """
     default_skip_subdirs = [
-        'users/prev_whats_new/*', 'users/explain/*', 'api/*', 'gallery/*',
+        'release/prev_whats_new/*', 'users/explain/*', 'api/*', 'gallery/*',
         'tutorials/*', 'plot_types/*', 'devel/*']
     try:
         with open(".mpl_skip_subdirs.yaml", 'r') as fin:
@@ -595,7 +595,7 @@ def js_tag_with_cache_busting(js):
     # no sidebar for release notes, because that page is only a collection of links
     # to sub-pages. The sidebar would repeat all the titles of the sub-pages and
     # thus basically repeat all the content of the page.
-    "users/release_notes": ["empty_sidebar.html"],
+    "release/release_notes": ["empty_sidebar.html"],
     # '**': ['localtoc.html', 'pagesource.html']
 }