assertion failure in tests/test_imus.py

running a unittest on my local machine, I ran into this assertion:

FAIL: test_kalman (skinematics.tests.test_imus.TestSequenceFunctions)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\...\scikit-kinematics\skinematics\tests\test_imus.py", line 87, in test_kalman
    self.assertAlmostEqual(error, 0, places=2)  # It is not clear why the Kalman filter is not more accurate
AssertionError: 0.20809466821986328 != 0 within 2 places (0.20809466821986328 difference)

----------------------------------------------------------------------
Ran 49 tests in 6.549s

FAILED (failures=1)

My environment: Windows 10, Python 3.8.6, alabaster==0.7.12 attrs==19.3.0 Babel==2.8.0 backcall==0.2.0 bleach==3.1.5 CacheControl==0.12.6 cachetools==4.1.1 certifi==2020.6.20 cffi==1.14.2 chardet==3.0.4 colorama==0.4.3 cryptography==3.0 cycler==0.10.0 decorator==4.4.2 defusedxml==0.6.0 docutils==0.16 entrypoints==0.3 ... grpcio==1.32.0 httplib2==0.18.1 idna==2.10 imagesize==1.2.0 ipykernel==5.3.3 ipython==7.16.1 ipython-genutils==0.2.0 ipywidgets==7.5.1 jedi==0.17.2 Jinja2==2.11.2 jsonschema==3.2.0 jupyter==1.0.0 jupyter-client==6.1.6 jupyter-console==6.1.0 jupyter-core==4.6.3 jwcrypto==0.7 kaleido==0.0.1 kiwisolver==1.3.0 MarkupSafe==1.1.1 matplotlib==3.3.2 mistune==0.8.4 mpmath==1.1.0 msgpack==1.0.0 Naked==0.1.31 nbconvert==5.6.1 nbformat==5.0.7 notebook==6.0.3 numpy==1.19.1 oauth2client==4.1.3 packaging==20.4 pandas==1.0.5 pandocfilters==1.4.2 parso==0.7.0 pickleshare==0.7.5 pika==1.1.0 Pillow==8.0.1 plotly==4.9.0 prometheus-client==0.8.0 prompt-toolkit==3.0.5 protobuf==3.13.0 pyasn1==0.4.8 pyasn1-modules==0.2.8 pycparser==2.20 pygame==2.0.0 Pygments==2.6.1 PyOpenGL==3.1.5 pyparsing==2.4.7 pyrsistent==0.16.0 python-dateutil==2.8.1 python-jwt==3.2.6 pytz==2020.1 pywin32==228 pywinpty==0.5.7 PyYAML==5.3.1 pyzmq==19.0.1 qtconsole==4.7.5 QtPy==1.9.0 requests==2.24.0 requests-toolbelt==0.9.1 retrying==1.3.3 rsa==4.6 scikit-kinematics==0.8.5 scipy==1.5.3 Send2Trash==1.5.0 shellescape==3.8.1 six==1.15.0 snowballstemmer==2.0.0 Sphinx==3.2.1 sphinxcontrib-applehelp==1.0.2 sphinxcontrib-devhelp==1.0.2 sphinxcontrib-htmlhelp==1.0.3 sphinxcontrib-jsmath==1.0.1 sphinxcontrib-qthelp==1.0.3 sphinxcontrib-serializinghtml==1.1.4 sseclient==0.0.26 sympy==1.6.2 terminado==0.8.3 testpath==0.4.4 tornado==6.0.4 traitlets==4.3.3 uritemplate==3.0.1 urllib3==1.25.10 wcwidth==0.2.5 webencodings==0.5.1 widgetsnbextension==3.5.1

thomas-haslwanter / scikit-kinematics

assertion failure in tests/test_imus.py #42