CLI

Flags

Flag	Description
simple	Writing simple bar with only :fill: and :line: chars.
--length	ProgressBar length.
--current	Current progress value.
--total	Needed progress value.
--chars	ProgressBar chars

Chars order

Argument passing order (yes, not very convenient, will be changed soon).

1. fill
2. line
3. start
4. end
5. unfilled_start
6. unfilled_end