sdlweb: Bumped the "next version" to 2.0.18.

SDL Commits
1 
From 96f31d45e0509ce23cab9a7f87d913b9084fd8b5 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Tue, 10 Aug 2021 17:01:16 +0000
Subject: [PATCH] Bumped the "next version" to 2.0.18.

---
 include/nextver.inc.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/nextver.inc.php b/include/nextver.inc.php
index b9c46d8..1d9e936 100644
--- a/include/nextver.inc.php
+++ b/include/nextver.inc.php
@@ -2,9 +2,9 @@
 // Update these on each release.
 $current_sdl_major = 2;
 $current_sdl_minor = 0;
-$current_sdl_patch = 14;
-$next_sdl_version_duedate = "Apr 2, 2021 23:59:59 GMT-0800";
-$github_milestone_id = '1';   // sadly, these don't have version strings, so we have to update for each release.
+$current_sdl_patch = 16;
+$next_sdl_version_duedate = "Nov 12, 2021 23:59:59 GMT-0800";
+$github_milestone_id = '2';   // sadly, these don't have version strings, so we have to update for each release.
 
 // don't touch these.
 $current_sdl_version = "$current_sdl_major.$current_sdl_minor.$current_sdl_patch";