Added the 'thread' key, which stands for either 'mailid' or 'reference'.
-rw-r--r-- 1385 Makefile
-rw-r--r-- 35147 gpl-3.0.txt
-rw-r--r-- 3010 mymail-vm.el
-rw-r--r-- 6152 mymail.1
-rw-r--r-- 38348 mymail.c