Merge topic 'release-notes'

ccc87047 Help: Add documents to collect notes between releases
70309e70 Help: Add documents for release notes
34ea1f15 Utilities/Sphinx: Add option to build 'text' format

Help/index.rst

@@ -39,6 +39,16 @@ Reference Manuals
    /manual/cmake-toolchains.7
    /manual/cmake-variables.7
 
+.. only:: html or text
+
+ Release Notes
+ #############
+
+ .. toctree::
+    :maxdepth: 1
+
+    /release/index
+
 .. only:: html
 
  Index and Search

Help/release/dev.txt

@@ -0,0 +1,16 @@
+..
+  This file should be included by the adjacent "index.rst"
+  in development versions but not in release versions.
+
+Changes Since Release
+=====================
+
+The following noteworthy changes have been made in this development
+version since the preceding release but have not yet been consolidated
+into notes for a specific release version:
+
+.. toctree::
+   :maxdepth: 1
+   :glob:
+
+   dev/*

Help/release/dev/0-sample-topic.rst

@@ -0,0 +1,7 @@
+0-sample-topic
+--------------
+
+* This is a sample release note for the change in a topic.
+  Developers should add similar notes for each topic branch
+  making a noteworthy change.  Each document should be named
+  and titled to match the topic name to avoid merge conflicts.

Help/release/index.rst

@@ -0,0 +1,14 @@
+CMake Release Notes
+*******************
+
+..
+  This file should include the adjacent "dev.txt" file
+  in development versions but not in release versions.
+
+.. include:: dev.txt
+
+Releases
+========
+
+.. toctree::
+   :maxdepth: 1