Add unit tests for compute_diff substring branch and aligned UTF-32 match realignment#10

Copilot wants to merge 3 commits into

masterzotonic/diffy:masterfrom

copilot/add-unit-tests-aligned-utf32-match-and-compute-difzotonic/diffy:copilot/add-unit-tests-aligned-utf32-match-and-compute-difCopy head branch name to clipboard