v0.4.1

Bug Fixes

• Drop karma from peerDependencies (eebcc98)
• do not dispose collectors before they are written (9816cd1)
• reporter allow using a externally provided source cachere for reporters (781c126)
• watermarks are not passed to reporters (a904405), closes #143 #144
• when using browserify dont create source code caching (50030df)

Features

• preprocessor: Add sourcemap support (de3b738), closes #109
• reporter: add check coverage thresholds (bc63b15), closes #21

BREAKING CHANGES

• Karma is no longer a peerDependency so it needs to be installed
  manually.
  Ref karma-runner/integration-tests#5