Document the additions to the clipboard kitten

docs/kittens/clipboard.rst

@@ -11,14 +11,40 @@ from the shell. It even works over SSH. Using it is as simple as::
 
     echo hooray | kitty +kitten clipboard
 
-All text received on :file:`stdin` is copied to the clipboard.
+All text received on :file:`STDIN` is copied to the clipboard.
 
-To get text from the clipboard you have to enable reading of the clipboard
-in :opt:`clipboard_control` in :file:`kitty.conf`. Once you do that, you can
-use::
+To get text from the clipboard::
 
     kitty +kitten clipboard --get-clipboard
 
+The text will be written to :file:`STDOUT`. Note that by default kitty asks for
+permission when a program attempts to read the clipboard. This can be
+controlled via :opt:`clipboard_control`.
+
+.. versionadded:: 0.27.0
+   Support for copying arbitrary data types
+
+The clipboard kitten can be used to send/receive
+more than just plain text from the system clipboard. You can transfer arbitrary
+data types. Best illustrated with some examples::
+
+    # Copy an image to the clipboard:
+    kitty +kitten clipboard picture.png
+
+    # Copy an image and some text to the clipboard:
+    kitty +kitten clipboard picture.jpg text.txt
+
+    # Copy text from STDIN and an image to the clipboard:
+    echo hello | kitty +kitten clipboard picture.png /dev/stdin
+
+    # Copy any raster image available on the clipboard to a PNG file:
+    kitty +kitten clipboard -g picture.png
+
+    # Copy an image to a file and text to STDOUT:
+    kitty +kitten clipboard -g picture.png /dev/stdout
+
+Normally, the kitten guesses MIME types based on the file names. To control the
+MIME types precisely, use the :option:`--mime <kitty +kitten clipboard --mime>` option.
 
 .. program:: kitty +kitten clipboard