Notification about go-dry dependency

[quenbyako]

Since we have a lot of feedback to remove github.com/xelaj/go-dry dependency, we decided to provide a solution how to fix it:

We are working on eitri project, which helps developers to create and deliver amazing cli and web apps, so, really dry method implementations like dry.PanicIfErr are moving to extra.go file in each package.

Also, we're decided to split go-dry package to multiple smaller dry-like packages, which providing problem specific methods, i.e. slicetricks, io readers/writers, maptricks, net helpers, etc.