[#944] Implement authorship analysis

[myteo]

Fixes #944.

A line is credited to the author who last modified it.

Another author might have written the line initially and the current
author only modified it slightly. In such a case, the current author
gets credited for work that is not entirely done by them.

Lets analyze how similar a line is to its ancestor line (previous
version of the line) and give partial or full credit to the author
based on the analysis. This feature is turned off by default as
it takes quite long to run.

[myteo]

Please let me know if you need any clarifications as this is quite a big PR 😬

[eugenepeh]

Please let me know if you need any clarifications as this is quite a big PR 😬

Indeed a big PR that is few hundred lines long. Can you give a brief technical implementation summary on the concept? If possible, would be preferable if it can break down to few smaller PRs.

[myteo]

Indeed a big PR that is few hundred lines long. Can you give a brief technical implementation summary on the concept?

I have added some descriptions in the issue (#944). Please let me know if any further clarification is needed.

If possible, would be preferable if it can break down to few smaller PRs.

I will create a feature branch and create a smaller PRs towards the feature branch. Is that ok?

[eugenepeh]

I will create a feature branch and create a smaller PRs towards the feature branch. Is that ok?

Sorry for late reply, yes that would be preferred.

[fzdy1914]

Just a question, shouldn't the PR targets to a feature branch? not master?

[myteo]

Just a question, shouldn't the PR targets to a feature branch? not master?

Yes it should be feature branch. I am still working on splitting up the PR, will try to get that out when I have more time.

[fzdy1914]

Closing this PR because it has been inactive for a very long time. For the contributors who are willing to take over, you may just use the code here as a start point.