[diff.cpp17.library] Add entry for <ranges> header (#2588)

CaseyCarter · tkoeppe · commit a3ab84cc0221 · 2018-12-10T22:00:49.000Z
diff --git a/source/compatibility.tex b/source/compatibility.tex
@@ -2030,6 +2030,7 @@
 \tcode{<compare>},
 \tcode{<concepts>},
 \tcode{<contract>},
+\tcode{<ranges>},
 \tcode{<span>},
 \tcode{<syncstream>}, and
 \tcode{<version>}.
