Changelog
* Added `crunch` and `deduplicator` utitlities https://github.com/graphql-python/graphene/commit/fa5f5b0acbede77a27d2f6e24d651ac8d6ea8c74 https://github.com/graphql-python/graphene/commit/2e41db8d95daa3ab09c294118e20b7c38387e00a
* Permit subclassing arguments from Mutations https://github.com/graphql-python/graphene/commit/4346832f71564b63d6025c2c9ff88d1ffd241136
* Added precommit https://github.com/graphql-python/graphene/commit/ae7395f9da812a68f873f92cfaf8279896ce1d64
* Moved `Enum` library to `graphql-core`, use `graphql-core>=2.1` https://github.com/graphql-python/graphene/commit/d28dc68abca5597f44274e1dbd6d000ff3826084
Documentation
* Improved docs https://github.com/graphql-python/graphene/commit/9da46e8c998c14ec603fef2060af41530af5d45c
* Updated interface docs https://github.com/graphql-python/graphene/commit/9efdf4c46e26aa478ced7150d0f963d77c086ac7
* Improved Mutation Output docs https://github.com/graphql-python/graphene/commit/1b746e64609e4bc9d9baf880954415452b476812