Merge pull request #64 from uofgravity/prepare-v0.4.0

REL: update changelog for v0.4.0

CHANGELOG.md

@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.4.0]
+
+### Added
+
+- Add various autoregressive flows using the existing transforms in `nflows` (https://github.com/uofgravity/glasflow/pull/62)
+- Add `scale_activation` keyword argument to `nflows.transforms.autoregressive.MaskedAffineAutoregressiveTransform` (https://github.com/uofgravity/nflows/pull/11)
+
+### Changed
+
+- Drop support for Python 3.7 (https://github.com/uofgravity/glasflow/pull/61)
+
+
 ## [0.3.1]
 
 ### Fixed
@@ -70,7 +82,8 @@ Patch to fix CI not uploading release to PyPI
 - Add `nflows` submodule that replaces `nflows` dependency
 - Add option for user-defined masks in coupling-based flows
 
-[Unreleased]: https://github.com/uofgravity/glasflow/compare/v0.3.1...HEAD
+[Unreleased]: https://github.com/uofgravity/glasflow/compare/v0.4.0...HEAD
+[0.4.0]: https://github.com/uofgravity/glasflow/compare/v0.3.1...v0.4.0
 [0.3.1]: https://github.com/uofgravity/glasflow/compare/v0.3.0...v0.3.1
 [0.3.0]: https://github.com/uofgravity/glasflow/compare/v0.2.0...v0.3.0
 [0.2.0]: https://github.com/uofgravity/glasflow/compare/v0.1.2...v0.2.0