Assets 2
The theme of this release was making `cargo crev` more useful from
the very start.

Most commands don't require creating an Id now. For a new user, getting
useful informations about dependencies should be as simple as:

```
cargo install -f cargo-crev
cd <project>
cargo crev fetch all
cargo crev verify deps
```

Even if the user is not planing to create an Id and review crate themselves,
they can still use `verify deps` to get many useful information about their
dependencies: line counts, features, popularity and reviews of other users.

A new command was added to help IDE users review crates:

```
cargo crev open [crate]
```

will open a source code of the [crate] in the system's file explorer. In
the future it will allow opening crate source code directly in the selected
IDE.

The corresponding command for CLI/Vim/Emacs users is:

```
cargo crev goto [crate]
```

This release includes a lot of small fixes, especially around support for
OSes other than Linux.

Unfortunately there have been some breaking changes, though they all should
be relatively easy to fix.

The full CHANGELOG can be found at:
https://github.com/dpc/crev/blob/master/cargo-crev/CHANGELOG.md