release 0.6.0 (killercup#393)

* bump the version to 0.5.1

* README: update for workspace and package flags

* bump the version to 0.6.0

* update dependencies

* upgrade: --package flag conflicts with --workspace

* appveyor: update image

bump version to 0.5.0 (killercup#376)

* bump version to 0.5.0

* update dependencies

Release 0.4.2 (killercup#365)

Change log:

- Add a `--skip-compatible` flag to cargo upgrade

  This flag will make cargo upgrade ignore upgrades where the old
  version is semver compatible with the new one. This is useful in cases
  where you don't want to churn the `Cargo.toml` files in the whole project
  knowing that the lockfile is already forcing the versions to be up to date.
- Bunch of internal clean-up

- - -

Closes killercup#364

Merge killercup#350

350: cargo update -p miniz_oxide r=ordian a=ordian

Fixes this `warning: package `miniz_oxide v0.3.4` in Cargo.lock is yanked in registry `crates.io`, consider updating to a version that is not yanked`.
```
❯ cargo tree -i -p miniz_oxide   
miniz_oxide v0.3.4                                                                                                                                                                                                  
└── flate2 v1.0.12
    └── reqwest v0.9.22
```


Co-authored-by: Andronik Ordian <write@reusable.software>

Merge pull request killercup#332 from ordian/release-0.4

Release 0.4

Merge killercup#316

316: Release 0.3.3 r=ordian a=killercup



Co-authored-by: Pascal Hertleif <pascal@technocreatives.com>

Merge killercup#306

306: bump dependencies r=killercup a=killercup

close killercup#305
close killercup#300

Co-authored-by: Pascal Hertleif <pascal@technocreatives.com>

Merge killercup#246

246: Release 0.3.1 r=killercup a=killercup

Closes killercup#245

Co-authored-by: Pascal Hertleif <killercup@gmail.com>

Merge killercup#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 (killercup#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 <killercup@gmail.com>
Co-authored-by: Andronik Ordian <write@reusable.software>
Co-authored-by: Benjamin Gill <git@bgill.eu>

Merge killercup#184

184: Bump version to 0.3.0-beta.1 r=killercup a=ordian

Contains these PRs: https://github.com/killercup/cargo-edit/pulls?utf8=✓&q=merged%3A2017-08-16..2017-12-19