include packages as submodules

[dotemacs] / packages / slime

diff --git a/packages/slime b/packages/slime
new file mode 160000 (submodule)
index 0000000..a8a3dd8
--- /dev/null
+++ b/packages/slime
@@ -0,0 +1 @@
+Subproject commit a8a3dd887141a6a64cd9646a95a56c48e1a2f5e1