deprecated says to use pair and so it's used in the body
Javadoc changes
Use string interpolation and replace deprecated methods
Do not compute name hashes when name hashing is disabled

We should compute name hashes only when name hashing is enabled.
Otherwise, we just store an empty value for name hashes.
Added sbt-scoverage to list of plugins.
add Laika documentation plugin to the list of community plugins
Bring back and deprecate `Incremental.incDebugProp`.

The ae15eccd9c7aea2b4336ea454d974aed66d5ec16 accidentally removed
`Incremental.incDebugProp` which broke Scala IDE build that relies on it.

We bring back that val but at the same time we deprecate it because we
have better mechanism for configuring incremental compiler now.

I also added a little comment with the history of `incDebugProp` which
explains proper migration path.
Merge pull request #1076 from gkossakowski/bring-brack-incDebugProp

Bring back and deprecate `Incremental.incDebugProp`.
Fixes to the internal API hooks for the sbt server.

* Alter the TaskProgress listener key to be `State => TaskProgress` so it
  can be instantiated from the current server/sbt state.
* Expose the xsbti.Reporter interface for compilation through to sbt builds.
Merge pull request #1082 from jsuereth/wip/sbt-server-api-fixes

Fixes to the internal API hooks for the sbt server.
Expose overwrite flag in IvyActions.publish, and by default only overwrite if it's a snapshot
Scala 2.11 modules now under org.scala-lang.modules

Using 1.0-RC2 for scala-xml, 1.0-RC1 for scala-parser-combinators.
Update dependencies to Scala 2.11.0-M7.

I had to sprinkle some excludes due to dependency of scala-compiler M7 on
M6 modules. Those excludes won't be needed by the time M8 is out.
Merge pull request #1092 from gkossakowski/scala-2.11-compat

Build for Scala 2.11
Add link to sbt-sonatype plugin
Merge pull request #1093 from xerial/add-sbt-sonatype

Add link to sbt-sonatype plugin
Fix binary compatibility with 0.13
Logic system supporting auto plugins and initial outline of AutoPlugin and Natures types.

 * Not integrated into project loading
 * Doesn't yet check that negation is acyclic before execution
Main part of integrating natures into project loading.
API documentation and comments related to natures