[tepl] docs: document Tepl 3 -> Tepl 4 API break

[Sébastien Wilmet <swilmet src gnome org>]

commit 11f14c8c5d08065aa1cc167c137434b37a6cc0be
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Nov 3 12:15:49 2017 +0100

    docs: document Tepl 3 -> Tepl 4 API break

 docs/reference/api-breaks.xml |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/api-breaks.xml b/docs/reference/api-breaks.xml
index 6ce12cc..685ed32 100644
--- a/docs/reference/api-breaks.xml
+++ b/docs/reference/api-breaks.xml
@@ -99,4 +99,19 @@
       </listitem>
     </itemizedlist>
   </chapter>
+
+  <chapter id="api-breaks-3-to-4-tepl">
+    <title>Tepl 3 -> Tepl 4</title>
+
+    <itemizedlist>
+      <listitem>
+        <para>
+          Tepl&nbsp;3 depended on GtkSourceView&nbsp;3, Tepl&nbsp;4 depends on
+          GtkSourceView&nbsp;4. So to be able to use Tepl&nbsp;4, you need to
+          port your code to GtkSourceView&nbsp;4. Note that the GTK+ dependency
+          is still GTK+&nbsp;3.
+        </para>
+      </listitem>
+    </itemizedlist>
+  </chapter>
 </part>