ode23s.m: new function from former odepkg (bug #57309) * scripts/ode/ode23s.m: new function from former odepkg https://bitbucket.org/odepkg/odepkg, applied Octave code conventions. * scripts/ode/private/runge_kutta_23s.m: new helper function for "ode23s" from the former odepkg. Inline function "__dfxpdp__", applied Octave code conventions. * scripts/ode/module.mk: Add new files to the build system. * scripts/help/__unimplemented__.m: Removed functions from list of unimplemented functions. * NEWS: Announce new function.

--- a/NEWS	Sat May 16 03:46:38 2020 -0400
+++ b/NEWS	Mon May 18 17:21:53 2020 +0900
@@ -212,6 +212,7 @@
 * `mustBeReal`
 * `namedargs2cell`
 * `newline`
+* `ode23s`
 * `ostreamtube`
 * `rescale`
 * `rotx`