Fix pubspec.yaml syntax around '-polymer --csp' flag
fix a timing issue with dart analysis
review comments
Add json validator component, to be used by upcoming manifest.json validator.
Add json validator tests.
Add custom validator for "manifest.json" files.
Code cleanup.
move the run button
disabled a warning at startup
add pub/bower context menu to packages
address comments
upgrade tavern to fix issue with pub get
Rename "ErrorSink" to "ErrorCollector"
Rename "emitMessage" to "addMessage".
Address code review feedback.