Update appdata and the readme

README.md

@@ -3,10 +3,10 @@
 The GNOME desktop allows the wallpaper to change with time.
 
 These dynamic wallpapers are XML files, and you don't want to write these files
-yourself: Dynamic Wallpaper Editor is a little utility for the creation or the
+yourself: *Dynamic Wallpaper Editor* is a little utility for the creation or the
 edition of these XML wallpapers.
 
-![screenshot](https://raw.githubusercontent.com/maoschanz/dynamic-wallpaper-editor/master/help/C/figures/screenshot.png)
+![screenshot (list view)](https://raw.githubusercontent.com/maoschanz/dynamic-wallpaper-editor/master/help/C/figures/screenshot.png)
 
 ### Create XML files
 
@@ -21,13 +21,17 @@ edition of these XML wallpapers.
 Easily open an XML file, add pictures, or remove pictures, or change their order
 or their durations, and save the modifications.
 
+The list of pictures can conveniently be displayed as a list or as a grid.
+
 ### Set an XML file as a wallpaper
 
 An existing XML file (opened, or just created) can be set as your wallpaper (or
 as your lock screen) from the app.
 
 Adjustment options are available (mosaic, zoom, centered, etc.)
 
+----
+
 ## Installation
 
 ### Flatpak
@@ -44,3 +48,8 @@ You can install it from flathub.org using the instructions on [this page](https:
 - [openSUSE (OBS)](https://software.opensuse.org//download.html?project=home%3ADead_Mozay&package=dynamic-wallpaper-editor)
 - Arch and Manjaro ([AUR](https://aur.archlinux.org/packages/dynamic-wallpaper-editor))
 
+----
+
+![screenshot (grid view)](https://pbs.twimg.com/media/EE31jEpWsAYeKv-.jpg)
+
+

TODO.md

@@ -2,26 +2,25 @@
 
 ## Opening XML files
 
-- Not important: monitor XML files to detect modifications
 - Not important: ability to open an XML file by drag-and-dropping it from nautilus
+- Important: monitor XML files to detect modifications
 
 ## Adding and managing pictures
 
+- Important: placeholder for the grid view too
 - Important: filtering what come from the "add pictures" dialog the same way as for "add a folder"
 - Very important: **ensure the memory is freed when deleting a row**
-- Important: **remove selectability** from pics' widgets
 - Not important: ability to add a picture by drag-and-dropping the file from nautilus
-- Not important: search entry, to find a specific file within huge lists
+- Not important: search entry, to find a specific file within huge lists?
 
 ## General
 
 - Important: less ridiculous "automatic fix"
-- Not important but cool: experiment things in preview.py and try a "line or grid" setting
 - Not important: more clear and useful error messages, including line numbers
 - Not important: title widget adapting to the window size
 
 ## Translations
 
-<!-- - Important: provide translations to the description in `data/com.github.maoschanz.DynamicWallpaperEditor.appdata.xml.in`, but without cluttering the `.po` file with release notes bullshit XXX update anyway -->
+<!-- - Important: provide translations to the description in `data/com.github.maoschanz.DynamicWallpaperEditor.appdata.xml.in`, but without cluttering the `.po` file with release notes bullshit -->
 - Not important: Provide translations for the help user manual
 

data/com.github.maoschanz.DynamicWallpaperEditor.appdata.xml.in

@@ -24,17 +24,23 @@
       </image>
       <caption>An example of a wallpaper changing with daylight</caption>
     </screenshot>
+    <screenshot>
+      <image type="source">
+        https://pbs.twimg.com/media/EE31jEpWsAYeKv-.jpg
+      </image>
+      <caption>The grid layout</caption>
+    </screenshot>
   </screenshots>
 
   <releases>
-    <!-- <release version="2.2" date="2019-09-22"> -->
-    <!--   <description> -->
-    <!--     <p> -->
-    <!--       The app can now optionally display pictures using a grid layout -->
-    <!--       instead of a list. -->
-    <!--     </p> -->
-    <!--   </description> -->
-    <!-- </release> -->
+    <release version="2.2" date="2019-09-22">
+      <description>
+        <p>
+          The app can now optionally display pictures using a grid layout
+          instead of a list.
+        </p>
+      </description>
+    </release>
     <release version="2.1" date="2019-07-31">
       <description>
         <p>