feat: Remove leading equal signs before mic levels

[BlackEdder]

This is to fix issue #180

[msberends]

Thanks a lot! I think the lines are not working, since they are starting with ^ (regex) and used fixed = TRUE (disallowing regex).

Could you please update the 2 lines of code to this:

x <- gsub("^=+", "", x)

It will remove any number of equals signs from the input.

Many thanks!

[BlackEdder]

Thanks, should be fixed now.

[msberends]

Great, thanks!