v1.6.5
docs(guide): tweaks to the index and external resources guides
docs(error/badrestrict): fix typo (of --> or)
docs(external-resources.ngdoc): fix broken link
refactor(*): remove workarounds for IE <9, update IE/Edge-related comments
feat(ngdocs): support popover, foldouts and foldover annotations
test(jQuery): run tests with jQuery 2.1, 2.2 & 3.2