Fix reparent methods to update parent for all siblings

[amirshukayev]

Only the first and last child were being reparented properly (or parent pointer being updated).

Fixes #44

[adamreichold]

Thank you for taking of this issue which appears to have been with us for over 7 years!

[adamreichold]

I fear there will be many instances of the newly introduced mismatched_lifetime_syntaxes lint firing when this hits the CI. @amirshukayev Would you be up to resolve this as a separate commit but as part of this PR? If not, I'll try to fix these first via separate PR and then we can handle this one.

[adamreichold]

I fear there will be many instances of the newly introduced mismatched_lifetime_syntaxes lint firing when this hits the CI. @amirshukayev Would you be up to resolve this as a separate commit but as part of this PR? If not, I'll try to fix these first via separate PR and then we can handle this one.

As expected, a lot instances of mismatched-lifetime-syntaxes.

[amirshukayev]

I fear there will be many instances of the newly introduced mismatched_lifetime_syntaxes lint firing when this hits the CI. @amirshukayev Would you be up to resolve this as a separate commit but as part of this PR? If not, I'll try to fix these first via separate PR and then we can handle this one.

As expected, a lot instances of mismatched-lifetime-syntaxes.

Fixed with af71571