Can we add an API to reconstruct the header programmatically?

[aruprakshit]

When we are parsing a Hunk header like this @@ -6,9 +6,11 @@ def add(string), we are only capturing previous_lino_start for e.g. -6, new_lino_start for example +6. So we are missing important information like def add(string), and total line changes like 9, 11 etc. I think the lib should add API to reconstruct the header in case someone want it.

[Edouard-chin]

That make sense. I merged #13 which should address your use case.