Absolute paths in cache

[amasad]

When deploying to, say heroku, you'll get a different temporary path on every deploy. And although you can carry over the .happypack cache we won't be able to use it because the paths are absolute.

Would you be open to changing that to make it relative to the root?

[amireh]

Caching has been removed in v4 so this issue isn't applicable anymore. Is there a reason you can't use the latest version?

[amasad]

I think v4 is in beta? Also caching was removed? Why? That's the major reason we use happy pack, concurrency is nice to have for initial cold cache builds but that doesn't happen often

[amireh]

v4 is out of beta since 8ef7852 (about 3 months ago.)

Re caching, see #154 (comment).