harrah/xsbt — pull request #237 by indrajitr (2011-10-20 16:53:48+00:00)
Title: Default set of opt-ins for convenience

This is a followup of the proposal [here](https://github.com/harrah/xsbt/pull/179#issuecomment-2071661)

Default set of _well-known_ opt-ins to be used together other deduced Task or Setting values.

Example usages:

```scala
javacOptions ++= DefaultOptions.encoding
scalacOptions ++= DefaultOptions.encoding :+ DefaultOptions.deprecation
scalacOptions in doc <++= (name in doc, version in doc) map DefaultOptions.scaladoc
credentials += DefaultOptions.credentials
```