[ET Trac] [Einstein Toolkit] #1627: Merge rewrite branch of McLachlan

[Einstein Toolkit]

#1627: Merge rewrite branch of McLachlan
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  Reporter:  eschnett               |       Owner:                     
      Type:  enhancement            |      Status:  new                
  Priority:  major                  |   Milestone:                     
 Component:  EinsteinToolkit thorn  |     Version:  development version
Resolution:                         |    Keywords:                     
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Comment (by eschnett):

 Add backward compatibility layer for parameters: Done.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1627#comment:2>
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