Add coverals badge
Fix test_timer to use sleep
Add documentation to reloader.py
Fix bad default value (array) in plugin.py
Make script more modular
Add more tests.
Revert "Make script more modular"

This reverts commit 34fce69c5db7038817ab8e373fc6aef54235cfce.
Add --exit-if-no-plugins
Remove __main__ condition in script.py
Add script test