Release Notes for Nuts 3.0.2

The latest 3.0.2 release for Nuts contains mainly fixes to the core and improvements to the documentation.

• Add @lucmurer to the project maintainers (#42)
• Add some diagrams describing the data flow through NUTS (#12)
• Add more self-tests (#15, #16)
• Refactor: Move implementation of method nornir_filter() up to NornirNutsContext (#51)
• Fix several type annotations (#18)
• Fix several dependency issues (#14, #43)

Further upcoming Changes:

• Sadly @bytinbit stops being a maintainer of the NUTS project by the end of the year.
  @lucmurer will take over as maintainer and main developer of NUTS.