~/.muttrc: Change bindings for map (=) and mark (*).

.muttrc

macro index E "<enter-command>set editor=\"~/k/editlabel menu\"\n<edit><sync-mailbox><next-undeleted><enter-command>set editor=vim\n" "Edit labels"
# bindings
macro index = <tag-prefix>
macro index * <tag-entry>
bind index n next-unread-mailbox
# colors