switch TestRig to new Extension architecture
clean-up; remove obsolete code
switch to IAssertTrueListener and IAssertFalseListener
switch to IDocumentParsingListener, ISpecificationProcessingListener, and IConcordionBuildListener
finish JavaScript extension
finish CSS extension
finish ResourceExtension
finish CommandExtension
don't commit csproj.user files
prepare FileSuffixExtensionsTest - pull changes of Elvira on SpecificationLocator
improve stability of NUnit test execution
finish ExtensionConfigurationTest: implement Extension / Extensions attributes and configurations to load extensions
fix configuration example for extensions
restructure Extension specifications and add overview page
finish Listeners and Extensions
finish IConcordionExtender
remove obsolete classes
move renderer classes from Renderer to Listener namespace / folders
add missing Listener/MetadataCreator.cs
fix namespace of support classes