Updated HISTORY.rst.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

HISTORY.rst

@@ -12,6 +12,7 @@ History
 * `!8`_: Tests are now called via pytest instead of nosetest. This improves stability and test output and adds nice
   reports. Coverage now works in multiprocessing after properly closing and joining multiprocessing.Pool and adding
   .coveragerc.
+* Fixed some warnings.
 
 .. _#7: https://git.gfz-potsdam.de/EnMAP/sensormapgeo/-/issues/7
 .. _!7: https://git.gfz-potsdam.de/EnMAP/sensormapgeo/-/merge_requests/7