build: update NEWS

NEWS.org

@@ -18,11 +18,30 @@
       to use ~meson~ instead, and and even delivers a ~Makefile~ with some useful
       targets that invoke the corresponding ~meson~ / ~ninja~ targets.
 
+    - ~mu~ now require C++17 support for building (this is in preparation for code
+      that actually _uses_ C++17)
+
 *** mu4e
 
-    - ~mu4e~ is slowly moving from using the ~~~ to the more common ~--~ separator for
-      private functions; i.e., ~mu4e~foo~ becomes ~mu4e--foo~.
+    - the old mu4e-view is gone; only the gnus-based one remains, this allowed
+      for removing quite a bit of old code.
 
+    - a lot of the internals have been changed:
+
+      - ~mu4e~ is slowly moving from using the ~~~ to the more common ~--~ separator for
+	private functions; i.e., ~mu4e~foo~ becomes ~mu4e--foo~.
+      - ~mu4e-utils.el~ had become a bit of a dumping ground for bits of code;
+	it's gone now, with the functionality move to topic-specific files --
+	~mu4e-folders.el~, ~mu4e-bookmarks.el~, ~mu4e-update.el~, and included in
+	existing files.
+      - the remaining common functionality has ended up in ~mu4e-helpers.el~
+      - ~mu4e-search.el~ takes the search-specific code from ~mu4e-headers.el~, and
+	adds a minor-mode for the keybindings.
+      - ~mu4e-context.el~ and ~mu4e-update.el~ also define minor modes with
+	keybindings, which saves a lot of code in the various views, since they
+	don't need explicitly bind all those function.
+      - also ~mu4e-vars.el~ had become very big, we're refactoring the factories
+	~defvar~ / ~defcustom~ declarations to the topic-specific files.
 
 *** guile