PsiViewer shouldn't chock on empty files
anchors for different files in same view provider should be different
decouple DependentNSReference from its quickfixes
pull to VfsUtilCore
moving static stuff around
remove unnecessary indirect dependency
don't depend on StdFileTypes
use FileTypeRegistry instead of FileTypeManager
remove Editor dependency from HtmlUtil
extract logic for processing links in HTML to a separate class
move another utility method to where it's used
UnfairLocalInspectionTool -> analysis-impl
xml suppressions -> xml-psi-api