ENH: ReleaseNotes-dev: updated

ReleaseNotes-dev

@@ -126,7 +126,9 @@
     globalPointPatch. Moving mesh cases can now be run non-parallel and
     continued in parallel and reconstructed without any limitation.
 *** *New* compact binary I/O for faces and cells.
-    This speeds up reading/writing meshes in binary.
+    This speeds up reading/writing meshes in binary. Binary mesh reading
+    is backwards (but not forwards) compatible. Use ascii mesh format or
+    foamFormatConvert.
 *** *Updated* runTimeModifiable
     + user selectable model to use for checking run-time modifiable
       dictionaries (see also doc/changes/inotify.txt):
@@ -139,8 +141,9 @@
     + on linux optionally uses inotify instead of time stamps - more efficient
       for large numbers of monitored files. No more fileModificationSkew needed.
     + single integer reduction instead of one reduction per monitored file.
-    + only files that can be re-read are being checked. Drastic reduction of
-      number of files to check.
+    + only files that can be re-read are being checked by specifying
+      in the IOobject constructor MUST_READ_IF_MODIFIED instead of
+      MUST_READ. Drastic reduction of number of files to check.
 *** *New* #codeStream dictionary entry
     Uses dynamic compilation of OpenFOAM C++ code to construct dictionary.
     E.g. in blockMeshDict: