Replace fun input with ownership

[gkorland]

When a value is passed by value and not reference the user can return the original value and avoid clone()

[freestrings]

@gkorland Very thanks.

But there are compile errors in the webassembly sub project. If you compile in the wasm directory, you will see the error.

[freestrings]

merged manually but not mark as merged.

[gkorland]

@freestrings sorry I was off for a week, I'm not sure I follow, do you need me to reopen this PR?

[gkorland]

@freestrings please check my last commit, I think this is the right way to add a way to let the user remove and not only replace with Null on delete

[freestrings]

@gkorland please check

• failed cargo test
• rebase this pr
• add unit test for None return

since the function parameter type and return type have changed, I believe it seems better to release it in version 0.3.x that i am planning around mid next month.

[gkorland]

@freestrings done

[gkorland]

Fix #8 allows return None on replace --> remove path --> delete the key

[freestrings]

@gkorland Thanks.
there is confict with master. it can not be merged. you should rebase this branch.

[gkorland]

@freestrings It says

This branch has no conflicts with the base branch

[freestrings]

@gkorland
Since Github is displaying the "This branch cannot be rebased due to conflicts" message, merging manually from the command line may not appear as merged PR.

[gkorland]

@freestrings is it working now?

[freestrings]

@gkorland No. It seems better to merge it manually and close this PR. what do you think?

[gkorland]

@freestrings go for it, it does seem like we're wasting time on git tricks...

[freestrings]

@gkorland this PR merged manually.