[release-notes] Add some more details

[Matthias Clasen <matthiasc src gnome org>]

commit 7425b1e0e11e38cefb5a5b18d552d50453088b36
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 22 16:19:25 2021 -0400

    Add some more details
    
    These were cherry-picked from Thibault Martins notes.

 help/C/index.page | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)
---
diff --git a/help/C/index.page b/help/C/index.page
index 5e8aeebf..8e514dc2 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -90,6 +90,8 @@
     now shows more information, and looks better than ever! The new design 
     features two main views: one for the hourly forecast for the next 48 hours, 
     and one for the daily forecast, for the next 10 days.</p>
+    <p>It is also more mobile-friendly as it supports resizing to narrower
+    sizes.</p>
   </section>
 
   <section id="settings">
@@ -134,6 +136,10 @@
     automatically. New version history dialogs display the recent changes for 
     each application, the updates logic has been updated to reduce the 
     frequency of reminders.</p>
+    <p>Be it Flatpak, or distribution packages, GNOME <app>Software</app> now
+    tells you where you’re installing your software from.</p>
+    <p>Some work happened behind the scene to improve how Software presents
+    information about new packages.</p>
   </section>
 
   <section id="files">
@@ -156,6 +162,7 @@
       the file you are moving.</p></item>
       <item><p><app>Files</app>'s built-in archive extraction feature now 
       supports extracting password-protected archives.</p></item>
+      <item><p>The location entry offers Tab completions when typing a path.</p></item>
     </list>
   </section>
   
@@ -164,17 +171,20 @@
     <media type="image" src="figures/maps.png">Maps Information</media>
     <p>GNOME 40 includes many other smaller improvements, including:</p>
     <list>
-      <item><p><app>Maps</app> has new information popups for locations. It is 
+      <item><p><app>Maps</app> has new information popups for locations, showing
+      information from Wikipedia, as well as native location names. It is 
       also more adaptive, making it possible to use it at a range of sizes.
       </p></item>
-      <item><p>The interface for using the Compose Key has been improved: when 
-      a compose sequence is being entered, an indicator is now shown ahead of 
-      the cursor. Dead keys are handled in a similar way now, too.</p></item>
+      <item><p>The interface for using the Compose Key has been improved: Compose
+      sequences are shown as they are being entered. Dead keys are handled in a
+      similar way, too.</p></item>
       <item><p>Many of GNOME's apps have visual updates for GNOME 40, with 
       rounded window corners and lists and new-style view switchers. Affected 
       apps include <app>Files</app>, <app>Web</app>, <app>Disks</app>, 
       <app>Fonts</app>, <app>Calendar</app>, <app>Photos</app> and <app>System 
       Monitor</app>.</p></item>
+      <item><p>The <app>Document Viewer</app> sidebar displays paired
+      thumbnails when the main view is in side-by-side mode.</p></item>
       <item><p>GNOME's visual style has got smoother and more polished. Sharp 
       edges have been rounded, strong borders have been smoothed out, sidebar 
       styling has been unified and toned down. Scrollbars are now slightly