[](https://pypi.org/project/bezier/2020.2.3/) [](https://bezier.readthedocs.io/en/2020.2.3/)
ABI Changes
-----------
Packaging
- Introduced first-class build and install support for `libbezier` via [CMake](https://cmake.org/). Achieved with the following PRs
- Added `CMakeLists.txt` files to enable building `libbezier` with [CMake](https://cmake.org/) ([\#175](https://github.com/dhermes/bezier/pull/175)).
- Added `-DTARGET_NATIVE_ARCH:BOOL=OFF` flag to enable portable release builds ([\182](https://github.com/dhermes/bezier/pull/182)).
and closed the following issues
- Use a shared library (rather than a static library) for `libbezier` ([\54](https://github.com/dhermes/bezier/issues/54)).
- Enable Python installs to be "hybrid-editable" ([\56](https://github.com/dhermes/bezier/issues/56)). (This means that the Python files reference the source tree but the built components, i.e. `libbezier` and `_speedup.so`, are already built and utilize caching of [CMake](https://cmake.org/).)
- Use build system other than Python / `distutils` / `setuptools` ([\62](https://github.com/dhermes/bezier/issues/62)).
- Add ability to disable `-march=native` flag to make release builds portable across compatible operating systems ([\181](https://github.com/dhermes/bezier/issues/181)).
Python Changes
--------------
Additive Changes
- Exposing `Curve.evaluate_hodograph()` [method](https://bezier.readthedocs.io/en/2020.2.3/python/reference/bezier.curve.html#bezier.curve.Curve.evaluate_hodograph) as part of the public API ([\191](https://github.com/dhermes/bezier/pull/191)). Fixed [\#138](https://github.com/dhermes/bezier/issues/138).
Packaging
- Removed build dependency on `gfortran` and other heavyweight tools (and hacks) such as `numpy.distutils`. Now, `libbezier` must be built before the Python package can be installed and the install location must be provided via the `BEZIER_INSTALL_PREFIX` environment variable. Achieved with the following PRs
- Requiring prebuilt `libbezier` when building `bezier._speedup` Python binary extension ([\176](https://github.com/dhermes/bezier/pull/176)).
- Support building of wheels on all platforms that depend on `libbezier` ([\182](https://github.com/dhermes/bezier/pull/182)).
- Switch from `manylinux1` to `manylinux2010` for built wheels ([\178](https://github.com/dhermes/bezier/pull/178)).
- Delaying imports of `pkg_resources`, `scipy` and `sympy` until actually needed (if ever) ([\194](https://github.com/dhermes/bezier/pull/194), [\#195](https://github.com/dhermes/bezier/pull/195), [38602d8](https://github.com/dhermes/bezier/commit/38602d88714b5358fdab2730392c7bbf27b2b8c2)).
- Adding `matplotlib` to `pip install bezier[full]` ([8beb036](https://github.com/dhermes/bezier/commit/8beb036ce06decb26ae25de118a8a3778c18c519)).
- Avoiding `bezier.dll` name collision on Windows in wheels distributed on PyPI ([\190](https://github.com/dhermes/bezier/pull/190)). Fixed [\#189](https://github.com/dhermes/bezier/issues/189).
Breaking Changes
- Removed `bezier.get_dll()` helper ([\184](https://github.com/dhermes/bezier/pull/184)).
Documentation
-------------
- Changed "Read the Docs" landing page to point to `.../stable/` documentation (i.e. the last published release) instead of `.../latest` documentation (i.e. the last **merged** commit).
- Making sure [CMake](https://cmake.org/) installed trees (on Linux, macOS and Windows) are verified in `doctest` as part of CI ([48e4166](https://github.com/dhermes/bezier/commit/48e416651878f02f7fce35e4944c56ba98463427)).
- Making sure `example_*.c` ABI examples are compiled and run (on Linux and macOS) in `doctest` as part of CI ([ffdcdf7](https://github.com/dhermes/bezier/commit/ffdcdf7e0b6608bb2a2b37337abbf49090f922c2), [9551495](https://github.com/dhermes/bezier/commit/95514952d54224d52d909876cb54bb75e672b653), [0766649](https://github.com/dhermes/bezier/commit/07666494a318d81770323a03aba694a282a8434b)).
- Converting (untested, potentially stale) console codeblocks to `doctest` (that get run in CI) for Linux sections of binary extension documentation ([\188](https://github.com/dhermes/bezier/pull/188)). Fixed [\#74](https://github.com/dhermes/bezier/issues/74).