Harald thanks for your detailed step-by-step tutorial. It was very helpful and easy to follow.
but I am using Powershell and it report:
 # git diff @~1 @ | clip
At line:1 char:10
+ git diff @~1 @ | clip
+          ~
Unrecognized token in source text.
At line:1 char:14
+ git diff @~1 @ | clip
+              ~
Unrecognized token in source text.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : UnrecognizedToken
so I turned to git show e3211778 > 4.2_diff.output and pasted it here, hope it can be use:
4.2_diff.output
This is the 4.2 update of spine-unity 运行时文档 based on outdated page: