docs(chglog): generate changelog.

Signed-off-by: Braden Mars <bradenmars@bradenmars.me>

CHANGELOG.md

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+<a name="unreleased"></a>
+## [Unreleased]
+
+### Bug Fixes
+- **deps:** update black/mypy versions
+- **main:** remove sub py3.9 asyncio queue loop parameter.
+- **pkg:** dep version constraints
+
+### CI
+- **chlog:** add changelog generation workflow.
+- **main:** add missed install step.
+- **main:** update main test workflow.
+
+### Features
+- **deps:** add pre-commit dev dep.
+- **dx:** add ruff config.
+- **pkg:** update troves, update includes.
+- **pkg:** use dependency group for docs deps
+
+
+<a name="v0.2.0"></a>
+## [v0.2.0] - 2021-02-14
+### Bug Fixes
+- **compat:** error if env_override not provided to resolve_executable
+- **compat:** incorrect type for resolve exec
+- **compat:** index error template issue
+- **compat:** resolve app ext incorrect map ref
+- **compat:** correctly display env override error message
+- **macos:** dng converter not launching on macos
+- **main:** handle implicit destination correctly
+- **pydng:** only throw wand import error if using jpeg extract
+
+### CI
+- add workflow for running tests
+- remove travis ci file
+- **cov:** fix coveralls upload
+
+### Features
+- **compat:** add compat module for x-platform compatibility
+- **compat:** add xplatform method for resolving binary executable path
+- **compat:** make compat module async
+- **compat:** add check for binary path resolution overrides via env variable
+- **convert:** remove cr2 file match in favor of simple file glob
+- **convert:** add dataclass DNGParameters to handle converter config options
+- **convert:** add DNGJob and DNGBatchJob dataclasses for hosting job information
+- **deps:** remove no longer used deps, update packaging info
+- **dng:** add support for lossy compression param
+- **flags:** refactor all flag enums to flags module
+- **pkg:** update setup file
+- **pkg:** move docs deps to extras
+- **pkg:** migrate to poetry, update pkgs
+- **pkg:** set correct min python requirements, update lockfile, update bump config
+- **pkg:** add bump2version dev dep, enable signed tags
+- **pydng:** rewrite DNGConverter to be async and execute conversions in parallel
+- **pydng:** add max_workers arg
+- **pydng:** collect and return results from convert, cleanup codestyle
+- **util:** add util for executing sync func in thread
+- **util:** add async compat timeit util
+
+### Performance Improvements
+- Batch Convert by CPU Count, Yield Each Proc on Completion
+
+
+<a name="v0.1.0"></a>
+## v0.1.0 - 2019-08-28
+### Features
+- Ensure exiftool is installed if Extract option is passed
+- Option to Extract Thumbnail from Raw File
+- Implemented Multiprocessing for Converting Images
+- Add Parameter and Process Handling for DNGConverter
+- Add Cli Flag Enums
+- Initial commit
+
+
+[Unreleased]: https://github.com/BradenM/pydngconverter/compare/v0.2.0...HEAD
+[v0.2.0]: https://github.com/BradenM/pydngconverter/compare/v0.1.0...v0.2.0