Allow moving neighbouring thumbs to accommodate new thumb values (for issue #55) #57
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This only addresses the first use case in issue #55.
I don't really understand the second use case: why would you want to allow breaking the min/max/step invariants in this case? I don't see any other situations where it is allowed to break these invariants.
I choose to augment the API to implement this feature by overloading
Thumb::setValue
with a version taking a "push" flag. This might not be the best approach, especially if use case 2 is needed. It might be better to have differently named methods, or to replace the flag with an enum.Please let me know what you think. :)