dwl-patches overhaul

Eliminated wiki.
Individual patches have a README.md explanation in their own subdirectory.
Simplified submission of new patches and maintenance of existing patches.
Instructions page (README.md autodisplayed) is now at https://codeberg.org/dwl/dwl-patches/

patches/limitnmaster/README.md

@@ -0,0 +1,9 @@
+### Description
+Limits nmaster to within the range of currently-opened windows (nmaster will not change past the full horizontal split layout)
+
+### Download
+- [git branch](https://codeberg.org/dev-gm/dwl/src/branch/limitnmaster)
+- [2024-03-15](https://codeberg.org/dwl/dwl-patches/raw/branch/main/patches/limitnmaster/limitnmaster.patch)
+
+### Authors
+- [dev-gm](https://codeberg.org/dev-gm)

patches/limitnmaster/limitnmaster.patch

@@ -0,0 +1,33 @@
+From 20c948398af900564a59007fc08d15eaa0b65da3 Mon Sep 17 00:00:00 2001
+From: Gavin M <github@gavinm.us>
+Date: Fri, 15 Mar 2024 17:33:27 -0500
+Subject: [PATCH] Added limitnmaster
+
+---
+ dwl.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/dwl.c b/dwl.c
+index 5867b0c..210c41d 100644
+--- a/dwl.c
++++ b/dwl.c
+@@ -1391,9 +1391,15 @@ handlesig(int signo)
+ void
+ incnmaster(const Arg *arg)
+ {
++	unsigned int n = 0;
++	Client *c;
++
+ 	if (!arg || !selmon)
+ 		return;
+-	selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
++	wl_list_for_each(c, &clients, link)
++		if (VISIBLEON(c, selmon) && !c->isfloating && !c->isfullscreen)
++			n++;
++	selmon->nmaster = MIN(MAX(selmon->nmaster + arg->i, 0), n);
+ 	arrange(selmon);
+ }
+ 
+-- 
+2.44.0
+