remove fade when changing tab

[sugitatestblue]

New Issue Checklist

• [o ] Updated Tabman to the latest version
• [ o] I took a look at the Troubleshooting Guide
• [o ] I searched for existing GitHub issues

Issue Description

not work. it changing fade. I wanna remove it

barView.fadesContentEdges = false
barView.buttons.customize { (button) in
        button.adjustsAlphaOnSelection = false

Other useful things

nothing

[sugitatestblue]

https://github.com/uias/Tabman/issues/344