Fix nwb tutorial bug

[oruebel]

Fix #55
Fix #59

[codecov-commenter]

Codecov Report

Base: 82.15% // Head: 82.15% // No change to project coverage 👍

Coverage data is based on head (1fe71a8) compared to base (6841196).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev      #56   +/-   ##
=======================================
  Coverage   82.15%   82.15%           
=======================================
  Files           9        9           
  Lines        2365     2365           
=======================================
  Hits         1943     1943           
  Misses        422      422           

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[bendichter]

@oruebel any idea what is causing problems with py3.7?

[oruebel]

@oruebel any idea what is causing problems with py3.7?

@mavaylon1 and @rly are working on the Python 3.7 pipelines in #53

[mavaylon1]

Is this still ready for a review? @oruebel

[oruebel]

@mavaylon1 this PR is ready for review

[oruebel]

I can't tell whether the failing runs are due to problems here or because of changes pending in #53 I'll merge these changes and then we can debug in #53

[mavaylon1]

@oruebel are you able to merge without passing the required tests?

[oruebel]

I temporarily changed the settings to allow bypassing of checks for admins