Work in progress (do not merge) - serializing and deserializing trees and nodes

[leonardbinet]

https://github.com/caesar0301/treelib/issues/85

[AdeBC]

Hello, This could be achieved using pickle package, which is a python built-in package. is other serializing method really needed? I think there's just one aspect that JSON is better than pickle, JSON file is not binary and thus is human-readable while pickle file is binary.

[leonardbinet]

@AdeBC you are right pickle is good for many situations, although here are some of reasons why other serialization formats can be interesting:

• security: pickle data is not secure you should not unpickle data from unknown sources
• portability: pickles are not portable among all python versions
• version control: if you want to track changes
• readibility

[AdeBC]

Oh, that make sense, security and other features you said are really necessary. Thanks for your hard work