Changes: document new bits

CHANGES-3.3

@@ -37,9 +37,15 @@ in the *Modules* heading, below.
  - Python 3.6 or later is now required, to allow for F-strings in
    Python code and allow other tidy-ups in the Python modules.
    Boost::Python now requires 1.67 or later (for CMake support).
+ - The log file now **always** contains a debug-log, and the `-D` flag
+   primarily controls what is printed to stdout. By default, stdout
+   only gets errors; use `-D6` to match stdout with the file. Use `-D8`
+   to get a verbose log file **and** verbose stdout.
 
 ## Modules ##
- - *grubcfg* changed the key *keepDistributor* to *keep_distributor*.
-   Please update configurations.
  - *bootloader* now supports more options when building the kernel
    command-line. (Thanks Evan)
+ - *grubcfg* changed the key *keepDistributor* to *keep_distributor*.
+   Please update configurations.
+ - *partition* requires KPMCore 21.12 (e.g. KPMCore 4.2 API, or later).
+