deprecate in favour of https://github.com/istanbuljs/babel-plugin-istanbul

[graingert]

No description provided.

[graingert]

@douglasduteil please for the sake of your users, kill this package.

[mrparkers]

This PR looks more like it's nuking everything rather than "deprecating" the package. The appropriate thing to do is leave a message in the README.md and version lock istanbul to 0.4.4. Deprecating a package doesn't make it completely unusable.

[graingert]

Sure but removing the code doesn't change anything about the npm package, just reduces the ranking in Google

[mrparkers]

Adding a deprecation warning at the top of the README should be more than sufficient for directing users to a better solution. Removing the code provides no benefit and is only going to hurt those who are interesting in learning how this package works (or perhaps used to work).