Updated HISTORY.rst.

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

HISTORY.rst

@@ -2,12 +2,22 @@
 History
 =======
 
+0.4.3 (coming soon)
+-------------------
+
+* Added .idea folder to .gitignore and removed already committed files.
+* Replaced GitLab URLs due to changes on the server side.
+* CI now uses Mambaforge.
+* 'make lint' now also directly prints the logs. 'make clean-test' now also removes .coverage.
+
+
 0.4.2 (2020-12-10)
 ------------------
 
 * Added URL checker and corresponding CI job.
 * Fixed all dead links.
 * Removed travis related files.
+* Fixed PEP8 style issues.
 
 
 0.4.1 (2020-11-28)