Merge pull request #89 from kbknapp/v0.6.0

v0.6.0 (2017-10-21)

Improvements

• Queries crates.io API for new versions with a channel-aware policy for latest ones (can be ignored by --aggressive) (closes #75, 7d57929)

Bug Fixes

• Queries crates.io API for feature changes to avoid "Package does not have these features" errors and warns user of obsolete features (can be suppressed by --quiet) (closes #84, 7d57929)

Documentation

• Updates dependency graph in README.md (closes #86, cf773eb)

Others

• Updates cargo to 0.22.0 (29ce666)