Adapted spinner from alive-progress python module

[alexlnkp]

Animation(s)

alive_progress=(0.05 '▁▂▃' '▂▃▄' '▃▄▅' '▄▅▆' '▅▆▇' '▆▇█' '▇█▇' '█▇▆' '▇▆▅' '▆▅▄' '▅▄▃' '▄▃▂' '▃▂▁' '▂▁▂')

[alexlnkp]

Took the default alive-progress' bar spinner from the python module, had to replicate frame-by-frame though.