Add ultra-symmetrical English opening Variation #154
                
     Merged
            
            
          
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
The current name at https://lichess.org/opening/English_Opening_Symmetrical_Variation_Symmetrical_Variation doesn't make much sense to me. I'm a fan of calling 1.c4 c5 2.Nc3 Nc6 3.g3 g6 the Symmetrical Variation, but after Bg2 and Bg7 I think we should remove the redundancy and call it the Ultra-Symmetrical variation, similar to what they use on Chess.con here and 365Chess.com here. It seems to be better known as the Ultra-Symmetrical Variation.