text: Title: Upgrade IRKernel version to 1.0.x
  Body: <!-- Thank you for contributing. These HTML commments will not render in the issue, but you can delete them once you've read them if you prefer! -->
  
  ### Proposed change
  <!-- Use this section to describe the feature you'd like to be added. -->
  Update to the latest version of IRKernel https://github.com/IRkernel/IRkernel/releases We are using 0.8.x and there is 1.0.x.
  
  ### Who would use this feature?
  <!-- Describe the audience for this feature. This information will affect who chooses to work on the feature with you. -->
  People who use R through Jupyter notebooks. We haven't had a lot of problems with IRKernel but we are a lot behind so who knows what good new features we are missing out
  
  ### How much effort will adding it take?
  <!-- Try to estimate how much work adding this feature will require. This information will affect who chooses to work on the feature with you. -->
  This could be a 5min job to update the version string in the source code or take a lot longer if things break because of the updated version. Hopefully the second case isn't likely.
  
  ### Who can do this work?
  <!-- What skills are needed? Who can be recruited to add this feature? This information will affect who chooses to work on the feature with you. -->
  Someone familiar with programming in Python and with a bit of experience of R lingo (or someone who wants to learn some of this) in order to understand possible error messages from the upgrade. 
  