State updates #73
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State updates #73
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Resolves #65
If a new version changes the shape of the state, we need to make sure any existing users' states will also be updated accordingly. To perform this patch, we create "updaters".
An updater is a function that accepts the state, modifies a certain part of the state, and returns it. Then, we can write an updater whenever there is a difference in state shape between two versions.
The new file
updater.jswill take the current version of the state, and perform updaters until it becomes up to date. These updates will only occur when the Background loads up. For users, this will only happen if MercuryWM is reloaded, reinstalled, or updated (automatically by Chrome).