move some scripts to devel subfolder

devel/update-amm

@@ -0,0 +1,13 @@
+#!/bin/zsh
+versions=$(curl -L https://api.github.com/repos/lihaoyi/Ammonite/releases/latest)
+
+download-version() {
+	(
+	echo "#/usr/bin/env python --version sh" && \
+	curl -L $( echo $versions \
+			| jq -r ".assets | map(select(.name | startswith(\"$1\")))[0].browser_download_url")
+	) > $2
+	chmod +x $2
+}
+download-version 2.13 $(which amm)
+download-version 2.12 $(which amm)2.12