Updated .zenodo.json. Added CITATION file. Updated version info.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
3 jobs for v0.9.8 in 4 minutes and 46 seconds (queued for 17 minutes and 14 seconds)
latest
Status Job ID Name Coverage
  Test
passed #25870
test_arosics

00:03:45

83.0%
passed #25871
test_styles

00:00:23

 
  Deploy
passed #25872
deploy_pypi

00:00:37