Merge pull request #31 from oliverlietz/master

fix script.canRead() check in DartMojo
[maven-release-plugin] prepare release dart-maven-plugin-2.0.4
[maven-release-plugin] prepare for next development iteration
fix typos
fix typos
Merge remote-tracking branch 'upstream/master'
add parameter sourceDirectory with default value "src/main/dart"
build and use proper path to packages ($sourceDirectory instead of $basedir)
change outputDir to ${project.build.directory}/generated-sources/dwc and defaultPhase to GENERATE_SOURCES
remove support for packages in web projects (do one "package" per project)
set default value for parameter htmlFile to "web/index.html"