Merge #215

215: Release 0.3.0 r=killercup a=killercup

## Release notes

A lot has happened since the last stable release!

The most important feature sure is that we try to not mess up your `Cargo.toml` files anymore!
While we are not 100% there yet, `cargo add foo` should give you much nicer edits now.

Other cool features:

- Add proxy support via env variable (#179)
- Allow simultaneous specification of both version and path
  (thanks, @dherman!)
- Add specific error for a missing crate (thanks, @bjgill!)
- `cargo-upgrade` now supports `--precise`, `--dry-run`, and has nicer output

Co-authored-by: Pascal Hertleif <[email protected]>
Co-authored-by: Andronik Ordian <[email protected]>
Co-authored-by: Benjamin Gill <[email protected]>

.travis.yml

@@ -12,11 +12,11 @@ matrix:
     script:
     - rustfmt -V
     - cargo fmt -- --write-mode diff
-  - rust: nightly-2018-02-14
+  - rust: nightly-2018-06-19
     before_script:
-    - cargo install clippy --vers 0.0.186
+    - cargo install clippy --vers 0.0.209
     script:
-    - cargo clippy -- -D warnings
+    - cargo clippy -- -D warnings -A renamed_and_removed_lints -A print_literal
   allow_failures:
   - rust: nightly
 before_script: