Bocker is now written in 'around 100 lines of bash'

The 100 lines limit was a fun idea but has started to hurt
development. There will still be a focus on keeping it short and simple,
but no hard limit imposed

tests/test_length

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-set -o errexit -o nounset -o pipefail
-
-[[ "$(wc -l < bocker)" -le 100 ]]; echo $?