renamin 0.16.2 version to 0.16.20
added version 0.16.19
added version 0.16.18
updated flow-bin to 0.73.0
fix #54
updated flow-bin to 0.72.0
updated version
updated changelog/0.16.13.txt
fixed KeyError: 'test' in show_unused_variables.py
updated global_vars.py plugin_version