This patch-level release fixes an issue with snapshots being preprocessed twice in some instances. Thanks to @adamkovalsky for the PR (#1822)!

• Fixes a regression introduced in https://github.com/mobxjs/mobx-state-tree/pull/1792 where a snapshot preprocessor gets called on an already preprocessed snapshot, resulting in potential errors.

If there are any problems with this release, please file an issue or leave comments in the attached Discussion! Thanks to everyone who contributed!