lint, +low prio/maybe finished items

todo.md

@@ -1,12 +1,15 @@
-## TODO
+# TODO
 
+- fix freq2/mem clock on internal GPUs; report unknown
+- add an interval mode; log stats to logging widget occasionally
+- binding/method to save log to text file
 - add vram stats: used / total
 - add unit toggle/binding; `Ghz` can be fairly vague - users may prefer `Mhz`/`Hz`
   - tldr: may be wanted for precision
   - driver provides *hertz*, with modern cards is fairly excessive
   - conversion is done using `format_frequency`
     - a wrapper of `format_size` from `humanfriendly`
-        - _(currently)_ defaults to highest sensible unit, changing on scale. 
+    - *(currently)* defaults to highest sensible unit, changing on scale.
     - often flipping between `500Mhz` / `2.6Ghz` where consistency may be preferred
 - address assumptions on some statistic files
   - Clocks:
@@ -15,7 +18,7 @@
   - Voltage:
     - similarly, `in0_input` is the assumed voltage file
     - indicated by `in*_label` with `vddgfx` inside
-        - no accounting for other voltage files currently; `APUs` / other cards may show more
+    - no accounting for other voltage files currently; `APUs`/other cards may differ
 - `argparse` extensions
   - restore `--card` / `-c` under `argparse`
     - to skip `amdgpu` device detection