What's Changed
* Fix memory map reference bug by LarsHill in https://github.com/LarsHill/metadict/pull/2
**Full Changelog**: https://github.com/LarsHill/metadict/compare/v0.1.1...v0.1.2
Note: Using `id(obj)` as a key in a custom memory address to object dictionary leads to edge cases.
If obj is garbage collected `id(new_obj)` might equal `id(obj)` and the wrong obj is retrieved from the lookup dictionary.
Hence, this functionality is removed.