Added changelog for 0.3.0

docs/changelog/0.3.0-changelog.md

@@ -0,0 +1,16 @@
+## [0.3.0](https://github.com/BYUCamachoLab/autogator/releases/tag/0.3.0) - 2022-02-07
+
+### Added
+- First public release.
+- Support for multiple configuration profiles, allows you to create multiple
+  hardware configurations or setups to load into the program.
+
+### Changed
+- Only supports Python 3.7+.
+- Moved to ``pyproject.toml`` and ``setup.cfg`` files.
+- Default data directory is no longer a system-managed folder (caused headaches
+  on Linux)
+- Switched to GPLv3+ license to protect open-source nature of this work.
+
+### Removed
+- Support for Python versions 3.6 and below removed.