v0.2.2: Update changelog and Cargo.toml to version 0.2.2 (#51)

Note: I had previously published version 0.3.0, but given that there are no breaking changes here, and that the previously published version was somewhat broken, I'm retracting that and only bumping the minor version here instead.

v0.2.1: Properly handle base URL argument in `URL` constructor (#33)

Plus, more proper error handling for invalid URLs. "More proper" because we should generate more helpful error messages, but this is an improvement for now.

v0.2.0

Correct release date for v0.2.0

v0.1.0

Initial commit