Update ChangeLog and NEWS

Author: eddelbuettel

ChangeLog

@@ -1,3 +1,11 @@
+2026-03-19  Dirk Eddelbuettel  <edd@debian.org>
+
+	* inst/include/RcppArmadillo.h: No longer dispatch to version/arma.h
+	* inst/include/RcppArmadillo/version/arma.h: No longer differentiate
+	between use with C++14 or later for current version and fallback
+	* inst/include/legancy/*: Removed fallback Armadillo 14.6.3
+	* inst/include/current/*: Moved up to unconditional default
+
 2026-03-17  Dirk Eddelbuettel  <edd@debian.org>
 
 	* DESCRIPTION (Version, Date): RcppArmadillo 15.2.4-1

inst/NEWS.Rd

@@ -3,6 +3,11 @@
 \newcommand{\ghpr}{\href{https://github.com/RcppCore/RcppArmadillo/pull/#1}{##1}}
 \newcommand{\ghit}{\href{https://github.com/RcppCore/RcppArmadillo/issues/#1}{##1}}
 
+\section{Changes in RcppArmadillo version 15.x.y-1 [unreleased] (2026-xx-yy)}{
+  \item Sunset the pre-C++14 fallback of including Armadillo 4.6.4 (Dirk in
+  \ghpr{504} closing \ghit{503})
+}
+
 \section{Changes in RcppArmadillo version 15.2.4-1 (2026-03-17)}{
   \itemize{
     \item Upgraded to Armadillo release 15.2.4 (Medium Roast Deluxe)