v0.1.7

Make improvements to `unused_import` detector, bump version to `0.1.7`

v0.1.6

Display help when no options are specified, bump version to `0.1.6`

v0.1.5

Update version in `Cargo.toml`

v0.1.4

Update version in `Cargo.toml`

v0.1.3

Update version in `Cargo.toml`

v0.1.2

Update version in `Cargo.toml`

v0.1.1

Fix issue in `visitor` module, update `README.md`

0.1.0

v0.1.0

Update `README.md`