D12: List of issues and PRs related to error handling

[mandresm]

This is a place holder for deliverable 12 of the project ESM-Tools+. The deliverable is a GitHub milestone that has all PRs and issues related to error handling that we would solve by the end of this year.

[mandresm]

@JanStreffing, you are the responsible person for this task, that's why I assign it to you, but atm it requires no action from you