chore: finally add CHANGELOG.md

Should've added a CHANGELOG.md a long time ago and stuck with
Conventional Commits.

Used `git cliff` to generate a mostly-acceptable changelog.

CHANGELOG.md

@@ -0,0 +1,130 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.6.4]
+
+### Miscellaneous Tasks
+
+- Add MSRV (1.60)
+- Upgrade dependencies
+
+## [0.6.3]
+
+### Styling
+
+- Format Cargo.toml
+- More Cargo.toml formatting
+- Move clippy allows to specific lines of code
+
+### Testing
+
+- Add (and fix) more deny lints
+- Add audit, deny, outdated, and udeps to CI
+- Fix cargo audit advisory db location
+- Make accepted licenses explicit
+
+## [0.6.2]
+
+### Bug Fixes
+
+- Allow clippy lints on specific tests
+
+### Refactor
+
+- Change std::time::Duration to std::core::Duration
+- Change unwrap()s to expects() and deny in clippy
+- Clean up by using cfg-if where possible
+
+### Testing
+
+- Use prop_assert* macros where appropriate
+
+### Dev
+
+- Add husky for pre-commit hook generation
+
+## [0.6.1]
+
+### Refactor
+
+- Switch to array-init
+
+## [0.6.0]
+
+### Testing
+
+- Add more stuff to CI
+- Add examples to CI
+- Get to 100% coverage, clean up cargo features
+
+## [0.5.4]
+
+### Performance
+
+- Add benchmark, optimize
+
+## [0.5.3]
+
+### Documentation
+
+- Updates to NetworkCoordinate
+
+## [0.5.2]
+
+### Features
+
+- F32/f64 cargo features added
+
+## [0.5.1]
+
+### Documentation
+
+- Udpate crate description
+- Minor updates re: type aliases, crate to 0.5.1
+
+## [0.5.0]
+
+### Features
+
+- Improve ergonomics for serialization format
+- Type aliases for 2D/3D NetworkCoordinates
+
+## [0.4.1]
+
+### Bug Fixes
+
+- Exclude examples from crate
+
+## [0.4.0]
+
+### Bug Fixes
+
+- Add numeric stability
+
+### Features
+
+- Add PlanetLab example
+
+### Testing
+
+- Add proptest, make vec mul/div scalar safer
+- Add property tests to HeightVector
+- Add test for NetworkCoordinate::estimate_rtt
+
+### Misc
+
+- Formatting
+
+## [0.3.1]
+
+### Documentation
+
+- Add link to docs.rs in README
+- Add link to ticket tracker
+
+### Features
+
+- Add serde
+
+<!-- generated by git-cliff -->