Add elfeed db as a submodule

.gitignore

@@ -12,6 +12,9 @@
 !var/
 var/*
 !var/elpher-bookmarks.el
+!var/elfeed/
+var/elfeed/*
+!var/elfeed/db
 
 !etc/
 etc/*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "var/elfeed/db"]
+	path = var/elfeed/db
+	url = https://tildegit.org/acdw/elfeed-db

var/elfeed/db

@@ -0,0 +1 @@
+Subproject commit d3b0798c4d07ffec773a522bc1b50cf857b4041b