Update NEWS.

NEWS

@@ -1,3 +1,27 @@
+Note: There is no guarantee that version mismatched client and server will
+be able to talk with each other. Network protocol breakages won't be listed
+here.
+
+
+v0.3 (xxxx-xx-xx)
+-----------------
+
+- Ability to track every memory allocation in profiled program.
+  - Allocation event queuing must be done in order, which requires exclusive
+    access to the serialized queue on the client side. This has no effect on
+    the rest of events, which are stored in a concurrent queue, as before.
+  - You can search for a memory address and see where it was allocated, for
+    how long, etc. This lists all matching allocations since the program was
+    started.
+  - All active (non-freed) allocations may be listed. This shows the current
+    memory state by default, but can go back to any point in time.
+  - Graphical representation of process memory map may be displayed. New
+    allocations/frees are displayed in a bright color and fade out with
+    time. This feature also can look back in time.
+- Support loading profile dumps with no memory allocation data (generated by
+  v0.2). 
+
+
 v0.2 (2018-04-05)
 -----------------