Merge branch 'bugfix/fix_ETRS_projection_incompatibility' into 'master'

Bugfix/fix etrs projection incompatibility

Closes #27

See merge request !1
4 jobs for v0.8.15 in 4 minutes and 49 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Test
passed test_arosics #10089

00:03:48

83.0%
passed test_styles #10090

00:00:23

 
  Deploy
failed deploy_pypi #10091

00:00:22

 
  Cleanup
passed cleanup_pypirc #10092

00:00:15

 
Name Stage Failure
failed
deploy_pypi Deploy
Writing arosics-0.8.15/setup.cfg
creating dist
Creating tar archive
removing 'arosics-0.8.15' (and everything under it)
running upload
Submitting dist/arosics-0.8.15.tar.gz to https://upload.pypi.org/legacy/
Upload failed (400): Invalid value for classifiers. Error: 'Topic :: Scientific/EngineeringLicense :: OSI Approved :: GNU General Public License v3 (GPLv3)' is not a valid choice for this field
error: Upload failed (400): Invalid value for classifiers. Error: 'Topic :: Scientific/EngineeringLicense :: OSI Approved :: GNU General Public License v3 (GPLv3)' is not a valid choice for this field
ERROR: Job failed: exit code 1