pull in subset of 6.2 to fix emoji in title crash

the last 17 commits are towards this
6.1 has a bug where emoji's in title crash dwm. Did not face this for
5 years from 2014, because websites did not use them

Well, it's 2019 now and websites do what they do. The relevent fix is
actually in the the HEAD of version 6.2, but had to go back and pull in
some other stuff to get the fix

Author: ChanderG

README.md

@@ -2,7 +2,9 @@
 
 [dwm](http://dwm.suckless.org/) aka dynamic window manager is a tiling window manager. It does get some time to get used to. It is fully customizable and here are my tweaks.
 
-Vendoring dwm for mu ease of use, as it is quite stable anyway. Currently on version 6.1. 6.1 is dependent on dmenu 4.6, meaning you need to upgrade that as well. May vendor dmenu into this repo as well, depending on need.
+Vendoring dwm for my ease of use, as it is quite stable anyway. Started out with version 6.1. 6.1 is dependent on dmenu 4.6, meaning you need to upgrade that as well.
+
+Have cherry-picked a bunch of commits between 6.1 and 6.2, to counter a bug that I was facing. So the code is now in a wierd fork of the original with patches.
 
 ### How to tweak?