fixed missing edge in create_MPS

[dncolomer]

The first edge created for the case where rank = 2 was not being appended to the connected_edges array

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[dncolomer]

@googlebot I signed it!

[codecov-commenter]

Codecov Report

Merging #838 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #838   +/-   ##
=======================================
  Coverage   98.37%   98.37%           
=======================================
  Files         129      129           
  Lines       22103    22103           
=======================================
  Hits        21743    21743           
  Misses        360      360           

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