Add lock mode tooltips

[sashadev-sky]

References #306 (<=== Add issue number here)

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• bump to 0.9.0
• fix rest of linting
• small refactoring
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[sashadev-sky]

@jywarren pulled out more code from #442. please review when you can!

[jywarren]

This looks great, and once the conflict is resolved we can merge it!

[sashadev-sky]

@jywarren ok great! I refactored and removed the tooltip from the image itself but other than that the result is the same as the gif