docs: document ancestry-aware style rules
docs: use 2.x wording and document mention padding
docs: use the apollohg scoped editor package
docs: replace legacy wiki with current API and migration guides
docs: adopt RichTextEditor and RichTextViewer names
updated package name
updated wiki
v1 docs
0.5.7 changes.
Docs improvements.
Removed duplicate headings.
Moved docs from main repo.