add changelog

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## 2.0.0 - 2023-11-21
+
+### Added
+- Support for multiple subnets
+- Support for cross-subnet canister calls
+- Ability to mute the server's stdout/stderr streams by setting the `POCKET_IC_MUTE_SERVER` environment variable
+- `__del__` method for PocketIC such that it gets collected automatically
+- New `.topology` field returning a map of subnet IDs to subnet configurations
+- New `get_subnet()` method to get the subnet of a canister
+- new `update_call_with_effective_principal()` method to call a canister with an effective principal
+- New class `SubnetConfig`
+- New class `SubnetKind` to specify different kinds ob subnets
+
+### Changed
+- `create_canister()` takes optional parameters to specify a subnet ID or a desired canister ID
+- constructor `PocketIC(subnet_config)` with a new optional `SubnetConfig` to create a PocketIC instance with a specified subnet topology
+- new implementation for `get_root_key()`
+
+### Removed
+- `delete()` method, superseded by `__del__`
+
+
+## 1.0.1 - 2023-10-13
+
+### Fixed
+- Fixed broken links on PyPi
+
+
+## 1.0.0 - 2023-10-12
+
+### Added
+- Blocking REST-API: Encode IC-call in endpoint, not in body
+
+## 0.1.0 - 2023-09-01
+
+### Added
+- Initial PocketIC Python release